The day my world changed

No, it wasn't a tragedy involving a loved one or a house move or birth of a child that changed my world today - thankfully. It was something so ordinary. We had decided to go shopping across the border in USA. We do this now and then when either the dollar is in our favour or if we need things we cannot find here in Canada but got used to while we lived in the States a few years ago.
We set off as ususal, kids in car seats, snacks and drinks for the ride, US dollars and passports at the ready. The journey to the specific stores we needed to go would be about1.5 hours including border crossing (longer if it was busy there). I had awoken with a slight headache and my stomach felt a tad off but I put that down to the time of the month and ignored it.
About 45 minutes into the journey i didn't feel so good, nauseous and hot and anxious. I tried to dismiss it for a few minutes and suddenly, seeing an exit off the highway ahead, I asked Dh to please get off the highway. We stopped in the parking lot of a fancy hotel/spa and I paced around trying to breathe and decided to head to the bathroom in case I was going to get sick. I tried to act calm as I walked in the grand entrance. The door guy was asking if he could help me and I was scanning the lobby for bathroom signs. I said I'd like some info on the hotel but needed the bathroom first and raced to the ladies room and locked the door. I felt hot, my digestive system was rebelling and I had a nervous IBS attack. After a few minutes I felt slightly better. The door guy was waiting with some hotel brochures which I accepted and left. I paced around in the parking lot with my heart racing, feeling dizzy and disoriented, outside of my body but at the same time deep inside of this scary place.
As soon as the symptoms subsided a little I thought I'd try to get back in the car but I didn't want to be imprisoned in there on a highway. I asked DH how far to the next bathrooms and rest stop and he promised me it was only a few minutes away and we would stop again there.
I white knuckled it to the next stop where I jumped out of the car before it had hardly stopped, needing the cold air on my face and in my lungs. I paced around and went to the bathroom again. I didn't know what to do - how would we get home? I felt detached and frightened and nauseous and I didn't know what to do.
Eventually we drove to the next stop - a plaza where I sat in the car while DH took the kids for lunch and bathroom. I felt ok in the car alone after a few minutes. I was a little distracted from the anxiety by all the people around doing there thing.
About an hour later, the rest of my family emerged and I knew we would ahve to drive some more. I didn't want to, I was restless and tense and scared and my sysmptoms were flaring each time the car moved.
The journey home was awful. I had to keep jumping out the car at every opportunity to pace about and take deep breaths of cold air. Finally we reached our town. We had exited the highway sooner than we usually would due to traffic so although we were in the town, we were still a way from the house and suddenly I was overwhelmed. I couldn't stand being in the car for more than a second. We stopped at a plaza so I could get out - the feeling that I was about to vomit was very intense. I am terrified of vomiting. I suggested to DH that he drive a bit ahead of me and I would walk for a while. This was not the smartest idea in February with slushy snow on the ground. Uggs are not meant for long uphill walks and definitely are not able to stand up to the wet snow and it didn't take long before my feet were wet (not cold though - the fur inside kept them toasty). I needed the bathroom all of a sudden so bad -I was scanning the street to see what my options were - coudl I make it to the gas station where DH was waiting. I saw an eldery man clearing the snow from his driveway, I figured I might have to ask him to use his toilet but when I got level to him I figured I coudl amke it to the gas station. I practically ran in and asked for the washroom, had to grab a nasty looking key to get in there. I just made it. Another IBS attack and a nervous bladder.
Once outside I had to get in the car again to get through a major intersection not designed for pedestrians but as soon as we were through it I had to walk again. I felt ok while walking - still anxious but not super bad.
Eventually I got home by walking a bit, then sending Dh ahead a bit more. I was so glad to get in the house. It took 4.5 hours to make the 40 minute journey home.
I continued to feel anxious and restless for a while after. 6 hours later I was calming but still restless. Approximately 9 hours after the ordeal began I felt like I could relax.
I was so sad this had happened. It had been so long since I had been this bad and I feared what might be lying ahead of me.