First time pregnant how long will I cramp?

Charity • 34 years old. Married my BFF. Workaholic. 2 precious minis. 4 year old boy and 6 month baby girl. 👨‍👩‍👧‍👦
I have PCOS and was told when I was 22 it would be very hard for me to get prego without fertility treatment. Well I'm 29 and just found out a few days ago I am pregnant, it was a big surprise! My doc will not see me for 2 more weeks and said that if I had a normal cycle I would be at 6 weeks but since I'm not normal that could be off.  The problem is I have never really had pms symptoms of cramping. I've only experienced bloating and craving Chocolate when I had my period.  I have been cramping for about 3 weeks. It hurts in both my tummy and my back. Is the cramping normal? How long will I experience this? Any feedback will be appreciated.