Didn't know TTC would be this hard

We have been TTC since we got married in May. I had been on the mini pill for 11 years so I understand it will take a while to get out my system but I thought my period would have regulated by now. I started having cycles 21-23 days then they went to 33 day cycles and now I'm 13 DPO, AF should have shown up according to Glow on Monday 29th Aug and still no show with no signs. I took a test on Tuesday which was digital and said in big fat letters - NOT PREGNANT 😔. I have been using ovulation strips this time and made sure we had sex during that time. Could it be still possible that if AF doesn't show that I could be pregnant? Has this happened to anyone else or been on the pill that