OB visit questions

Ok so I’ve got a appointment for the 29th and I haven’t had a pap in almost 5 years. I have two kids and after my youngest I got the mirena and in December 2016 I removed it myself due to it being uncomfortable and the strings were clearly sticking out. Bad. Well we’ve been ttc since and since 2014 (when I got the mirena inserted) I’ve had irregular periods. They use to be 28 day cycles on the dot and now they range from 30- 42 days. It’s infuriating. I am so nervous about going but excited to finally see what’s wrong with me. I was wondering what will they put me on to regulate my periods and help my hormones balance?