What is going on with my cycles since I've been trying to conceive?

My cycles have changed only since I've been trying to conceive.These are some on my LMP. April 19, May 22, June 26, July 29 and August 26 making my cycles(28,33,35,33 and 28). Now my LMP was 28 day cycle, I started the ovulation kit on day 10. I've gotten a slight dark line on Saturday day 17 of cycle and a darker line on Sunday day 18 of cycle. Monday day 19 of cycle when I checked my cervix it was high and i had a chunk of clear mucus. So does that mean I ovulated on day 19 of my cycle? I had BD on Tuesday day 20 and Wednesday day 21. Is that too late or around the time i should have BD? Today is day 22 and my cervix is extremely high I can't feel it. Is it possible that I'm fertile a week before my next period?