Im currently on cd20 and I'm having symptoms like tingly breast tender nipples, cramping, extremely hungry/thirsty,…

Im currently on cd20 and I'm having symptoms like tingly breast tender nipples, cramping, extremely hungry/thirsty, headache, nausea a lil.... I had a positivr opk a few days ago i dont know if i should wait to test. Im irregular so idk when af is coming my lmp was feb 25- mar 1. I also have this app that predicts ovulation and today is the day but i dont think Thats right..... Hmmmm😕 what do yall think