If you have been taking pills for past 10 months when will i be pregnant if i stop it now?

In about 3-6 months normally the menstrual cycles regularise on stopping the pill. (it depends if it was a Progesterone only or Estrogen & Progesterone Pill)

The menstrual cycles can return to normal maybe sooner, there have been cases documented of pregnancy in the first cycle itself.

If you are too worried Visit your Doctor. He will be able to help you.