Just so you have some good thoughts, my last GYN visit was almost a year ago (March), and I hadn't been in 4.5 years. I was terrified!! I was terrified before the appt, had about 5 minutes relief after, then thought Oh, now I have to wait for the results! So another few weeks! (my results must have gotten lost LOL)
Anyhow, all came out fine. I was so scared that I had developed some awful condition in the years I had missed. I didn't.
I would check with your GYN about the new guidelines for Pap. I think that you need to have 3 negative paps before getting them every 3-5 years. Check to see what she says.
Irregular cycles would be a normal thing to have in your age range. I am in that range too, although mine are somewhat regulated with an IUD.
Don't be in agony waiting for your appointment. Keep us updated! :-)