Ovulation help?

Every month (I’m on month 4 of TTC) I get a positive opk the day before my apps predict I’ll ovulate. This month I’m 5 days over my predicted ovulation date and I’m starting to really worry! Anyone know why this may be? It’s going to mess up my cycles which are usually so regular. I’ve had a crampy tummy and sore breaths so I have no idea what’s going on but it is making me crazy😩 my OPKs are getting lighter instead of darker and I’ve been testing twice a day with Clear Blue and once with an Amazon one in between. Help😞