Ovulation while pregnant

Hi,

I would like to know whether one would ovulate while pregnant or not?

I had sex with my partner on the 13th day of my cycle not sure was ovulating then or not.  Today is the 16th day of my cycle and I usually am ovulating during this time.  I dont use any ovulation monitor to find out whether i am ovulating or not.  But just the white discharge and normal abdominal cramps during this period tells me that i am ovulating.  But this time i have none of these signs.  I am just worried I might be pregnant.  Could someone please tell me whether this is normal? I am not on pills.  We just use condoms.

Thanks!!