Help! Irregular period, low progesterone, and trying to conceive!

So, I'm new to this so I'm not sure how this works. Long story short I was on birthcontrol for many years. I've been off of it for 6 months. I have been ttc for 2, but my cycle is 45+ days. I'm on day 57 now. It's frustrating because I think it's late, but it's obviously just my cycle. Also, I have low progesterone and am thinking of starting progesterone cream. Anyone done this? Anyone in this same predicament?? Also, has anyone tried 'preseed'? Thanks :)