I had suspected PCOS, but was never confirmed. Over 10-15 years my cycles varied from 5-6 a year to 9-10. As a teen I had 35 day cycles so wouldn't expect more than 10 cycles a year with things going well. After the pill or pregnancies it takes my body years to regulate again.
With my first child I lost a good amount of weight while ttc, eating low refined carb and a balance of weight training and cardio. I gained weight in my first pregnancy and with my second took clomid via infertility clinic who told GP to prescribe, which forced me to ovulate earlier but was a similar 9 months ttc. They would have discontinued clomid after 9 cycles, but I had a low 50mg dose. Others bump it up by 50mg at a time if no response. I don't think I needed clomid, but it may have made a more successful & supportive luteal phase.
The tricky thing with irregular cycles is knowing when you ovulate. If I get past a 40 day cycle it gets very difficult. I have never conceived with a longer cycle, though people do. It's harder because it is harder to pinpoint your fertile window. I read the book taking charge of your fertility. I was only able to conceive once I got down to to a 33-38 day cycle and knew I was hitting a fertile window of cycle day 18-26. Even that is a wide window to try to hit and sustain. Anything beyond that and I waited for the next cycle hoping it would be shorter. Longer cycles tended to be anovulatory. I tracked by bbt & I use an Ava bracelet now just so I know my bbt temps are as accurate as possible.
Both my primary & secondary infertility were unexplained, so the (two) cycles they ever did blood tests on at fertility clinic my day 2-5 bloods and progesterone levels a week after ovulation came back as normal. They also tested my husband's sperm both times as that can be a contributing factor.
Irregularity doesn't make it impossible to conceive, but you need to know what is going on with your cycle to know when you are ovulating so should have sex more regularly. Even then we would nail the fertile window & not conceive.
LH tests may be quite disheartening with a longer cycle. I have cycles where my LH doesn't quite peak then gets there a few weeks later. They can be useless if it is PCOS as LH can be elevated, but they help me as I do a baseline LH test after a period then can track the LH up towards when I am likely to ovulate. Cycle to cycle, I have never known when that will be. LH tests give an indication that ovulation may be about to happen or your body is trying to ovulate. I think from the last 12 months with LH tests sometimes the LH spike has been been too late for us to time things.
Your day 2-5 bloods with high free testosterone & estrogen dominance would be an indication of PCOS. You can have the syndrome without ovary issues (many follicles trying to mature, but none being dominant & releasing an egg). That was never an issue for me other than irregularity or competence in ovulation & luteal phase.
Low refined carb diet with more protein & fat, plus exercise helps regulate my cycles (so likely insulin resistance, but not necessarily PCOS), but too intense cardio exercise has also had a negative impact in the past where my cycles stopped.
With my first daughter they would have tried IUI to basically bypass & control the cycle, but we conceived after I had a laparoscopy and the first cycle I was temping & being more aware of my fertility signs.
The wait for fertility investigation wasn't a bad thing when I was about 28/29 years old as we had about a 6-9 month wait, which actually helped me understand better what was going on with my body & I had more menstrual & cycle history to tell the fertility clinic about.
How old are you and when did you come off hormonal contraception if you were taking this previously?