If you think you miscarried or having miscarriage you need to call your dr or go to ER. When I miscarried I bleed for a whole week straight and day I passed baby I had labor pains but I was no more than 6 weeks pregnant. Hope everything is okay with you and your baby.
After 12 weeks the chance of miscarriage drops significantlly. Unless you have a high risk pregnancy you are worrying for nothing. Enjoy your pregnancy and dont worry.