three negative home pregnancy tests could i still be pregnant?

[mc23]

my boyfriend and I had unprotected sex while I was on the last day of my period and used the pull out method. this was on feb 10. I have not had my period since then. I have taken two home pregnancy tests and they both showed negetive results. I have been feeling tired lately with headaches. Some lower back pain. I always have regular menstration. Could I be pregnant? We had protected sex about one week ago and spotted really light pinkish blood. But stopped right away. Can someone tell me anything or help?

[BetsyRose]

If I was you I would go see a doctor about having a blood test done.

[Babyyxg]

If I were you I'd go to a free clinic and get a blood test, home pregnancy tests aren't always accurate. & where you have normal cycles you should definately get it checked out

[smjmekg]

It's not unheard of for someone to miss one period, but if you have 28 day cycles, or close to it you would have missed two already. I would see your doctor for a blood test, and they may do other tests. Missing periods and cramping is not exclusive to pregnancy, and there could be something else causing you to miss them. You should have shown positive on a pregnancy test by now, but you may be one of the few who don't show positive until much later.