first round of Femara/ Letrozole after laparoscopic for endo/ cysts

Lisa
Hi there! Looking for someone in a similar situation as I am!
I had laparoscopic 4 weeks ago for an 8cm cyst on my left ovary as well as endometriosis 
I took letrozol on day 3-7 of my cycle as per my doctor 
Ultrasound on day 12 showed a healthy 23mm follicle on my right side 
Day 13& 14 I was super crampy ( could this be from the " super ovulation," that letrozol encourages?) 
I don't normally cramp during ovulation. 
Any advice or comments , or your experiences would be very much appreciated !!