Over doing it or doing it right?

So I came off birth control in July. AF just showed up yesterday. This is our first time TTC. I don't know whether I should spend a couple of months just letting nature take its course or if I should go ahead and pull out the big guns and start using opk's, checking my bbt and other methods. Just curious what other newbies have done and what others who have been in this awhile would recommend. Would I be over doing it trying all methods so soon or am I just doing it right? Thanks in advance!