Ttc after over 10years of pill and implant

MrsF
I came off the pill in April 15, after 10 years of the pill or implant (with no periods) ,with the intention to "stop preventing" but I work with babies, so I soon got a bit hung up on it all. I have been having irregular periods, one 22 days, one 36, etc... they have been horrendously painful and it is soooo frustrating. I know 7-8 months isn't long, and I'm only 25. But I want to know I'm not alone! 
Anyone have any similar experiences, with periods like this after contraception, and any tips on how to try and forget and relax?!!! i know I could try ovulation tests and I have some but kind of don't want to! I want to chill!! But am so desperate for this baby.