Help please!

I had my last period September 12-14th. Going by this app. I should have ovulated 2 days ago. My boobs have been hurting for the last week, cramps more on my lower right side, and fatigue. Thought they were signs of ovulation. Yesterday I started bleeding pretty bad so more or less I started my period. Awful one at that back pain and cramps. Would I have still ovulated and missed it or no? I just started tracking all this. I dunno if I ovulate or not. Never been pregnant. I'm just confused and wondering if anyone had any input. Thank you.