I had two negatives, one around the time my period was due and another a week later. The second one made me really angry because I'd been feeling strange for days and just knew I was pregnant. They were obviously wrong!
Got the faintest of faint positives a couple of days later - could only see it if I held it up to sunlight coming through the window, two days after that a nice, obvious BFP
Yep-i did. it took about 4 weeks before a faint positive came up. We never used a condom 3 days before my period was due and thought it would be ok......the period never arrived, i had twins 9 months later .