Problems since coming off cilest.

Hello, I'm after so advice as I'm abit worried. Im 23, and me and boyfriend have decided to start trying for a baby. I've been on the pill (Cilest) for the last 4 of 5 years. We decided to start trying back in August/ september. I come off the pill after the normal 21 days, had my perioud as normal but since have not had one. i finished my last perioud 20tb of September. I called my doctors a month after not coming on thinking maybe I might be pregnant. But he told me that it was a side eftect as coming off. It's been another 2 months now nearly since I called them. I've had a few other side effects such as more spots then normal, headaches and stomach pains as though I'm about to come on but I don't. Lately I've been feeling a lot more tired then usual bit that could be down to anything aswell, and I've been going to the toilet a lot more. Any advice on my situation would be great as it's really starting to get me down