Just want to know if this happened to anyone else

I was 8 days late and took three different pregnancy tests.. all negative

I started bleeding on boxing day .. I had fir five days .. started off light pink for two days and then went heavy dark red for two days and then brown .. like a period

Five days since the bleeding stopped and I have been having reflux as well as nausea..

So i took a pregnancy test yesterday and it was positive

If this has happen to anyone else and what happened I would really like to know the result as u am going a bit crazy not knowing what has happened

I have also had a recent miscarriage and a blighted ovum before that .. all within the last six months