Even if you are pregnant.. your belly wouldnt give it away.. I'd test with a different brand & see an OB. A friend of mine missed her period for three months, she thought her belly was getting hard.. but after several HPT & a OB appt.. she wasnt pregnant.. her cycle just went off course for some odd reason.. Good luck though.
A pregnancy test only tests for the pregnancy hormone if you ovulated late it take up to two weeks for your body to produce the hormone. You ovulate get pregnant and have to wait till you egg had attached to you uteran wall to start producing hormones my prgnency test didn't show possitive for almost 3 weeks. After I ovulated.
I took several pregnancy test and they all came back negative. My doctor ordered me to have a blood test that showed I was 12 weeks. You should make an appointment to see the doctor.
Try testing again with a different brand test