Af & ovulation

Amber
My cycle was off in March. It was completely absent. Came when it was suppose to in April. So now I'm not sure when I ovulate. According to my tracker it's not for another 2 weeks. However, the past two days I've had sensitive breast and pelvic discomfort. This normally happens when I'm about to ovulate. 
I do not use ovulation test. I don't plan on it unless I haven't conceived after awhile.