Ovulation - HELP

LONG POST but i need advice! First time posting so here’s a quick backstory. my hubs and I have been actively trying to get pregnant for 2 years consistently since our daughter turned 1. I nursed exclusively her first year and period did not return until a week before her 1st birthday in 2016. Fast forward and she is still nursing hence why my OB and I think I haven’t gotten pregnant. I don’t think I’ve ovulated regularly since having my period back. The last month or two she really hasn’t nursed as much. She usually nurses to sleep but the past month or so she only sips for literally a second or two then is done. I had my period for March and am 13 days pp. Sunday morning I woke up and had major discharge. Consistency was different than ever before. Haven’t really had any other discharge since. A little but not much. Now my boobs hurt - like HURT even just walking or sliding my hand over them hurts. The app says ovulation is tomorrow. I’m just curious if these symptoms are from ovulation?? And why would my boobs hurt this bad? Could the app be off about my ovulation date and it actually was on Sunday? Sorry for the long post and questions but I could use some help. Obviously ha!