Was it a Miscarriage?

hello everyone. I have had 3 miscarriages, and no successful pregnancies. my fist 2 ended in a d&c.; my last and most recent, I miscarried naturally at home. I was about 5 1/2 weeks along according to my missed period. I went to the doctor, she did an ultrasound, took my levels (hcg was low at 140), and verified I miscarried. it has now been 2 1/2 weeks since then, and the doctor asked me to take a home pregnancy test to make sure I get a negative test. it was a very fast very dark positive! I went in this morning for another blood test, and I am going insane with possibilities. Could I be pregnant? could it be ectopic? could it be molar? are my levels just dropping slower than expected and I did miscarry? or are there other possibilities?

at this point I don't know what I hope for! if I am pregnant, I'd be 8 weeks along and assuming I wasn't pregnant this whole time...I wasn't taking prenatals, I've had alcohol, ibuprofen, lunchmeat....living my nonpregnant life. what if I am pregnant but because I didn't know, I end up miscarrying anyway? if I am not, and my levels are just dropping slowly...then it just adds to the emotional rollercoaster. if it's something else...then what if my health is at risk? or what if it means I can never have children? im definitely spiraling here. any experience with this or insight would be so helpful.