Tests getting darker but bleeding and cramping

At 9 and 11 dpo I had very very light pink spotting so I assumed IB. 13 dpo I tested and it was positive, but it was faint so 6 hrs later tested again. Faint still but a little darker. Later that day I started bleeding and immediately thought chemical pregnancy. I've had one once before 6 years ago. Well the bleeding got lighter and was almost gone that day so I took another test again darker but still I was assuming miscarriage. The bleeding continued and today is day 3 but its not heavy enough for a pad. Just need a panty liner. But I am cramping not as bad as usual menetrual cramps but still cramps. So took another test today 15 dpo thinking it'd have to be lighter if its a MC and its even darker. I will call the dr but until they open I just am curious has anyone else had this happen?