Yep, normal. It can take a while for things to become regular again after the pill. I had been taking it for 6-7yrs and when I stopped it took me 9 months to fall pregnant and in that time my cycle was never regular and it had been before the pill. What helped me was Acupuncture. He was able to help me ovulate earlier and I got pregnant the first cycle seeing him. Unfortunately it ended in miscarriage but I went back to my AP and was pregnant first cycle again.
Hope that helps