I'm not sure what's up?

I thought I was pregnant (wishful thinking), but I don't think it's very probable. I've felt this pinpoint uncomfortableness in the same spot since 7 days after ual contact occurred. I'm on birthcontrol, btw. I missed my period, and I just took a test and got negative on it. However, when I press down on my abdomen where it hurts it feels like something's there, and when I try the other side it's different... My mom is telling me I'm crazy and I should stfu but this is like serious...