So frustrated!

So a few days ago I took a pregnancy test and it was positive. I've taken two and they were positive. Took two this morning and one said negative and the other was a faulty one. Why??? I'm not bleeding or anything. And my husband believes I am pregnant only because of my cream white discharge, he says I get that with every pregnancy early on. They say a positive line means positive but then why a negative today??? Isn't it rare to get a false positive and more common to get a false negative? Something like that! Ugh help. Tell me what's going on!!!!