Help! Heavy period and then BFP

Hi,

I started out spotting 2 days before AF was due (very normal for me). The day AF was due (Sat) the spotting got a bit heavier but nothing like a normal period.

The light period/spotting continued and on Sunday I took a pregnancy test. Very faint line.

Monday, I took another one and the digital test said yes.

Tuesday I started what I thought was a chemical pregnancy miscarriage. I had cramps, blood clots and had my ‘period’ til Saturday.

Yesterday and today my pregnancy tests have been very strong lines and just got my blood drawn at the doctor today.

She couldn’t see anything on the ultrasound as I’m just about 5 weeks if I am other than the endometriosis thickening.

Anyone else have this and turned out to be a viable pregnancy?