Does buying a cheap test matter ? I bought a cheap $1 test and it negative... but I'm late and I have kids so I know my body ... I'm showing all signs , I recently had my iud removed about a month an a half so idk if that effects the test. Long time SO and I have sex all the time unprotected. We have two kids TOGETHER so one more wouldn't kill us lol but yeah does the price of the test matter