Had my first scan today and I'm almost 12 weeks. Must have been implantation bleeding in July.
Tell me more about false negatives. I am also a first time Mommy. Last period was July 17 and I had what appeared to me to be implantation bleeding Aug 10. Took 3 pregnancy tests of which I am sure one was way too early. The other two were possibly too early too as I would have been in week 3 or 4? Just took one at docs on Friday. I have talked to other Moms that new they were pregnant but the only thing that confirmed was either a blood test or an ultrasound.
Your "light spotting" could possibly be implantation bleeding.
You should probably start counting from June 5. Maybe the July "light period" was pregnancy spotting? 12 days after your period is too short to get a positive pregnancy test.
You can have false negatives, but never a false positive. It's real. You count off the first day of your last period.so mine was june 30th. That makes me 8 weeks and 3 days.