Timing sex

I had a high fertility on 13th and 14th August I had peak on 15th me and my boyfriend dtd everyday day nearly only one day we didn't I didn't do opk today so not sure if the surge us over bur what are my chances of getting pregnant he fully ejaculated on high fertility he did ejaculate on peak days but was very little there if I'm not sure if my surge is over and when it ended how do I work out dpo I had sex before and

I think I had sex during ovulation not sure I think I have covered mist of my fertile times when I dtd