2 very positive test this morning HCG at 3

Alexandra

I got these two very positive pregnancy test this morning then started bleeding so went to the ER they said my HCG level is at 3 which I don't understand how if I'm still testing positive and that I'm having a miscarriage. Is this really a miscarriage? How long til I can try again? I literally took both these test before I headed to the ER.