Pregnant??

Lexi
So id be 14 or 15 weeks and I've been throwing up for the past 4 weeks and been nauseated. The thing is that I've been having my periods. But they are different. I took a test after my period two months ago and it was positive but the second line disappeared so I thought nothing of it. But now my doctor made me get a pregnancy test at the hospital. Help! I don't know if I am!!