How much tissue do you normally pass during menstration?

Question

Could I be having a miscarriage? I was having a lot of back pain last night and this morning, but it is time for my normal period. I have had a miscarriage before but I was 13 weeks pregnant then. Can you have a miscarriage and not know you were even pregnant? Would an excess amount of tissue, more than I normally pass, be a passed pregnancy?

Answer 1

ewwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwww