Does anyone know the answer to this by any chance?!?!😩😩😩

Okay so 2 weeks ago I've taken many pregnancy tests, all came back negative but one and that one had a faint line. I even did a blood test and it came back negative. Well I notice my change in appetite and notice how big my boobs have grown this week. I woke up this morning feeling terrible as if I was going to vomit and that happens a lot after I take a nap during the day. I'm always exhausted, especially after eating but I always sleep. I'm not trying to get pregnant but I do want to know what's going on with my body. Does anyone know?