what's going on??

Ryker

so I have pretty normal periods they last from 3to 5 days and I have a a normal 28 day cycle. also I had a son four months ago. I'm late by five days. I took two cheep test and were strongly negative. me and my boyfriend have unprotected sex and he didn't pull out a few times. But the test say negative while my body is saying positive. Should I get a more expensive test? or is something else going on?? please help