bloating and lower abdominal pains - pregnancy?

Paula • 22
Hey everyone. 
So I’ve been having lower abdominal pain for the past two weeks or so; doctor told me it was a parasite and gave me meds but I still am SUPER bloated and have mild lower abdominal pains. I’m pretty sure it’s colitis but my mom asked me if I could be pregnant and it just scared me. 
I’m on the pill and actually just finished having my withdrawal bleeding yesterday, so I would say it’s highly unlikely, but I need to know, what do you think?