Progesterone Supp

Marisa
Hey ladies! 
I've been on Crinone since week 5 and am almost 11 weeks now. My insurance would only cover one order of Crinone (wish doc would have just made it a bigger one), so yesterday I was switched to the vaginal suppository that is a small pill. Since then I have had a lot more cramping. Not super painful, just consistent. Is this normal? The switch has me really nervous. Thanks for any advice!