Abnormal cycles

I am 23 and my husband and I plan to start trying to conceive around October or so. I have been off my birth control since January of this year. I had been on different forms of birth control for the majority of the time since I was 18. When I am off of birth control, I usually have abnormally long cycles. Currently I am on day 55 of my cycle....this is not out of my norm. Basically, what I am wondering is how I should go about trying to conceive...other than sex (obviously). Is there anyone else out there that has a similar issue? Did you have a hard time conceiving? I have so many questions and don't really know where to begin. I just know that I want to be prepared for when we actually start trying to conceive. And I know that I will probably have to go to a doctor at some point...but still. Not yet.