Confused abt timing

Uhm apparently im not in tune with my body as I thought. I took a testvlast cycle, neg. Af came, shrt and lite. 2 days after its over and when the app says im supposed to be ovulating, im spotting with sore boobs, now only a day and a half of spotting and boobs still sore. TERRIBLY TIRED, voracious appetite. All of this is news to me to happen right after my period. I had sex the day after my period was over and everday or other day till today. Period ended Saturday. Help?? Any advice?