I am very confused and could use anyone’s insight on this. I had an IUD in for about 2 years and just got it removed 7/16. I still got a very light period and it seemed my cycles were regular. According to this I was estimating that I ovulated 7/13. I was expecting my period Monday but nothing. I did have what seemed like a light period 7/18-7/22. Yesterday i felt so terrible, nauseous/headaches/ cramps- the way i used to feel preIUD when i ovulated. Then last night i had just a few drops of spotting. Nothing today. I have been taking OPKs and posted the pic below - question I have is could the 7/18 have been a period and I am ovulating again? Was my CD 25 OPk below almost positive and then I missed the true positive? Very confused like i said. I’ve used OPKs with my prior pregnancies and never have run into this.