Not back to normal after stopping pill a year ago.

So I’ve been off the pill a year now and my periods still haven’t gone back to normal. I had my first period in 6 months end of May and nothing since. Been trying to get pregnant ever since being off the pill but keep getting BFNs. Had scans and blood tests and everything’s come back fine. I have an Underactive Thyroid so not sure if that has anything to do with it. I’d literally do anything to be pregnant :/ Can anyone relate? How long has it taken you lovely ladies to conceive?