Hi My Wife Had Periods On 30th December And She

Hi
My wife had periods on 30th december and she stopped on 2nd january.
On 7th jan we had a unprotected sex but i always pulled out at the end and never ended my climax inside her. Now yesterday on 11th january she again started bleeding but it does not contain clots and its seem like blood but its not just the spot like flowing like periods
Now i am concerned about here and we are not planning for the pregancy rite now.
Can u help me what is it and why again she started bleeding?
She had Pcod's problem and before this period she does not had her periods for almost 3 months she is taking homeopathy treatment for here periods and she on medicines
We both are concerned about the pregancy as this never happen before and we are not at all planning for baby rite this moment
Can you please suggest somethings about this