It took my body about a year of being off the pill to start getting more "normal" periods. Talking to the doctor is indeed a good idea for you if you're planning on conceiving.
I have also one more advice. While you try to sort things out and wait for your body and hormones to regulate themselves, see the doctor (who will do some blood test, ultrasound probably, and may even give you some pills to induce your period), why don't you try taking your BBT. All you do is take temperature every morning at the same time everyday and you can use online software to input the data and it will tell you if/when you ovulate. You can also check your cervical mucus. Fertile mucus will look like raw egg whites, very stretchy and clear. That's when you have to have sex. Once you get the hand of it, you will know what your body is doing. Right now the first thing you need is to figure if/when you ovulate.
The thing is it may take time. I know it seems like eternity when you want to have a baby. Been there done that
) But your ovaries have been inactive for quite a while. While on the pill, you did not have true periods (as true natural periods follow ovulation, which bcp prevents you from) but rather chemically induced bleeding. Therefore, it may take longer for your body to regulate, start ovulating and have natural periods.