Cramping after transfer

I had my transfer on June 5th. I got a bfp on Thursday with a digital. I’ve had mild cramping since transfer but the past two days it’s been a little more than mild. I’m on progesterone suppositories 3 times a day and a shot once a day. Do you think the cramping could be from the progesterone? Should I be concerned? Just wanted to know if anyone else has experienced this. My doctor said to my worry unless the cramping gets severe.