My daughter was 4 false negatives! I would wait a few days, test again, wait, test, etc. It was over two weeks, with my period almost a month overdue and still negative. I finally just went and got a blood test.
My false negative via blood test is due to arrive in 5-7 weeks from now.
I tried to believe their test was right and my hpt was wrong(thinking how could it be?) but I knew better.
When af is due it's due and when it didn't show up I knew there was a reason.
I had a negative hpt with dd (now 3), but knew I was pregnant, so kept testing until it came up positive! With this pregnancy, I got another negative, and even though I knew I was pregnant again, kind of forgot about it (we were going away). I woke up one morning while we were camping feeling sick and tested again - positive!
I gotta add my story. My false negative is kicking away and due in March.
I just knew I was pg, but I got my "period". Every time I went to the bathroom I kept expecting that I would have stopped bleeding, but it went on for 3 days. I was charting and my temp had dropped to coverline. After 3 days I woke up with a high temp so I tested. I got a positive so faint that the only reason I saw it was because I watched it come up. I have never seen a positive so faint. Even my friend who tested + at 9dpo got a darker line. I literally can not see it now.
Anyway, after 18 days of high temps (which is almost always a + pg) I tested...negative. I did not just suspect, I KNEW I was pg. We decided not to get a blood test, because even dh agreed I was pg (! he who would normally want to perform the test himself to confirm +!) and we thought that if my HCG levels weren't increasing according to what's "normal" it would trigger a whole cascade of tests/anxiety.
Day 20, tested negative. 21 days of high temps is supposed to be conclusively a positive pregnancy. My temps plunged below coverline. I was so convinced I was pg I thought I might be about to miscarry.
Day 24 tested negative in the evening.
Gestational week NINE--hey, a good, strong postitive line.
Can't tell you what the heck any of that was about, but I was definately, positively pg! Halfway there now...