I've missed my period now for 3 months but have been overly stressed. For a week now I have noticed my stomach getting bigger. I am very thin and have a very distended stomach and its hard. Even above my pelvic bone. I have this burning stabbing feeling on my left side only. It has been kind of hard to do number 2. No spotting of any color, no increase in appetite, not tired all the time, breasts are the same, no nasseua. I'm on vacation with family or another 5 days and I can't wear a bathing suit because I seriously look 3 months pregnant all of a sudden. I'm very uncomfortable.