Feeling icky

Hello everybody 🥺 I’m not feeling my very best this week. But I would like your thoughts today. I’ve working at a nursing home for almost 1 year it will be 8 months on the 24th of this month. I never got sick working there, ever and I got moved to another building in the nursing home. It’s the hospital side of the nursing home and my position is a floater/ fill-in. I fill for other workers who call in or take off work and I do there area when they are out, but recently I got sick with something I have no idea what’s going on with my body. Friday after noon I felt lightheaded, cold/ hot shaky and sore and I was about to past out. I went to ER and had a fever of 99.5 and went home with a 100.9 f I was nausea and having diarrhea. All of that has slowed down but now my stomach is very achy and I feel very full. I don’t have an appetite to eat like I used too I don’t know what’s going with me, i don’t want to say that I’m pregnant or anything else cuz i haven’t been active with my partner but at the same time it was around the time my ovulation so I’m not too sure. I have a doctors appointment to see what’s going on with me but, do you have any thoughts what could be wrong with me