I feel gross now.

So I've been sick for the past week and I keep throwing up (I never throw up unless it's serious), an I'm 18 weeks 5 days ... So I threw up tonight, an I peed myself... I just sat down in front of the toilet and cried because I felt so gross. I know it happens especially when you get farther along.. But I'm only 18 weeks 5days.... I also had a stomach ulcer back in December and it was so bad it was almost a bleeding ulcer but I took antibodics and steroids, so I thought it was gone but i dont know because I couldn't go to my follow up for it... I'm just worried and feel gross. I had to steal my wife's boxers so I would feel better.