Babe I'm not trying to be harsh here and I'm saying this because I recognise it as something I do but I think because you are anxious about the move/ your gf's sister etc you are over analysing everything your stomach and your body does, is it too hot? Is it gurgling? Do I have a headache? How am I feeling now? Am I sick? Etc etc I do it, I was doing it today. but you are fine. If you were going to be sick or were ill that meal you ate? Well you wouldn't have even got halfway through. Have you thought about taking a little walk or just doing something to help relax for a little bit? I'm here for you honey, you can get through this PM/EM anytime.
Be courageous, believe in yourself, and be the best woman you can be. I'm with you all the way.