Almost to the year mark of ttc....

So come June it will be a year that I stopped my birth control. I was originally having anywhere between a 30 to 32 day cycles, but then about three months after stopping birth control the cycle started to get longer and were lasting between 40 and 45 days. I spoke to my OB about this she said she wasn’t concerned because it appeared as I was ovulating as I was getting a period and she said it was no big deal that for about 6 months my cycles lengthened for no reason. I started taking my prenatal vitamins every day consistently about two months ago last month my cycle was right at 33 days, this month it’s appearing that. It will be about the same length(ewcm started today and I am Cd16-before I wasn’t ovulating until around cd27-29). Do you think that the prenatal vitamins had anything to do with that and that I might have a better chance of actually conceiving now or do you think it’s all just a coincidence.....just looking for any bit of hope