Chemical Pregnancy

Has anyone ever dealt with heavy bleeding in early pregnancy?

This is my second pregnancy and according the app I am 5 weeks. The morning after taking a digital pregnancy test that read positive (yesterday) I had mild cramping that would sometimes become really painful. I’ve been bleeding since not heavy enough to soak a pad, but each time I use the restroom there is blood like when I would be on my period. There were only 2 pieces of tissue that came out that were sort of solid. They were flat almost like a triangle. My doctors office is closed till Monday am and I’m just not sure what to do.