Ttc baby three

Annastasia
Havent been trying crazy long (three months). average 34 day cycle with ovulation around cycle day 20. my last period was on August 11th and ovulation was on August 29th or 30 th. well today I started getting very bad right pelvic pain and cramps. nothing very uncomfortable just found it odd. I never read into symptoms as with my other 2 pregnancies I didn't have much until I was around six or eight weeks. Any one able to give me some advice or opinions? Im still not due for af for a week.