I had bleeding when pregnant with all of my babies apart from my first.

With DS2 I was sooooooooo concerned as I had a crampy & heavy feeling in my tummy, and then I would bleed. I bled for 3 days before I sought help and when I did I was given an ultrasound which showed a perfect little bubba. He is now almost 3

Wishing you all the best. If you're still concerned, I would call your Dr up and demand a referral for an US.
Keeping you in my thoughts