I’m pregnant and bleeding

La

My last cycle was February 15-18. I have normal cycles. Same day every month. I took three test and all came out positive. I also took an hcg test at the dr and showed positive as well.

Today I’m bleeding and don’t know why. I have slight cramps in my uterus as well. I have had two previous miscarriages so I’m terrified here and need some advice.