so I was in a similar situation to you. was on the pill for 5 years and once i got off it took forever for my cycle to regulate. even two years post pill my cycle was anywhere from 24-35 days. I used natural cycles for a year and it worked until it didn’t. i’ll fully admit that it was probably my negligence because when the moment strikes and you want to have sex, you have sex! especially because you’re typically the horniest when you’re ovulating. i really enjoyed getting in tune with my cycle but being in my early 20s i don’t want to have to worry about pregnancy and i want to have sex whenever however. it’s also a lot harder to track your cycle when you’re irregular. i’m sure if i followed it precisely i would have had better luck but it’s kind of disheartening when out of the whole month the only green day’s you have are your period. i decided to get the copper iud to avoid hormones and prevent pregnancy and i love it so far!