Oh no, I feel for you! I used to get D&V every time i visoted the inlaws. It wasn't anything to do with them but at the time they were in a different country and i'd manage to pick up something between arriving in their country and getting to their house so I always arrived at theirs with D&V.
It started the first time I went to his country at 3 months pregnant. I ended up in hospital on a drip. Inlaws have two bathrooms in their house. It was a few years since DH had been home so MiL organised a dinner for a few of the locals he'd grown up with. MiL asked everyone to use one bathroom only so I had sole use of the other one. The guests got a glimpse of me out of the corner of their eye descending the staircase and disappearing into the bathroom. When you're ill you need your own bathroom.