I had my last period like 2 weeks ago. I had sex last Saturday (it's friday) and he did have a condom on. yesterday I started feeling a stomach ache and it was like I had to burp. when I don't think about it, it goes away. am I pregnant or am I just freaking out? my period is irregular so idk when I'm getting it next. I have no other symptoms of being pregnant. my stomach just has this gut feeling and it's really concerning me..