I'd wait a week after your missed period to test. I had to. I tested be4 my period and it was also negative and so I waited a week after and then got a faint positive.
My Period Is Due In Four Days, Can I Test Now? I Did 2 Last Week Which Were Neg But Was That Because It Was Too Early?
I took an first responce test 4 days early and got a faint yes- called doctor and she told me to retest after my missed period