positive pregnancy test after d&c

Eva

I had a d&c; January 25 of this year. I would have been 11 weeks the 26th. but when I got my ultrasound at the hospital the night and day of the d&c; my baby was measuring at 8w3d. I became sexually active with my husband 3 days after my d&c; ( unprotected) ( ik it was early but my hormones we're crazy) I took a pregnancy test two days ago and it's came back positive and quicker than it did before the miscarriage. could I possibly be pregnant again this early (my Dr said I was the most fertile right now) or could it simply be leftover hormones?? please give me your suggestion. I'm calling my ob tomorrow to see if he can possibly do blood work and another ultrasound to make sure there's nothing left but I'm a bit nervous bc some people say they got pregnant right after a miscarriage. and a friend of mine was pregnant with twins and only one of them dropped and the other was stuck in her tube.