Thank you so much for your reply
I agree with Heather5. You may have beenpregnant but implantation did not occur properly and your cycle eventually came on. I'm sorry that you are going through this. All I can say is that you will be blessed with a healthy strong baby soon. Keep the faith.
I think you probably were pregnant. Maybe a chemical pregnancy that built up enough HCG to measure on the sensitive HPTs, but didn't implant properly...and by the time you had the blood test, the HCG had gone back down below 5. I guess chemical pregnancies are fairly common, but most women won't know about it, they just assume their periods are a few days late (unless they use an early-detection test).
I'm so sorry you've been going through this...