I know this is a stupid question can you ovulate while pregnant I'm just wondering because I haven't…

I know this is a stupid question can you ovulate while pregnant I'm just wondering because I haven't ovulate and my period was only 3 days which is very short and it was light normally mine at 7 days and very heavy. And my period stopped on the 5. I toke a pregnancy test probably 1 1/2 weeks ago and it was negative should I test again? And can you ovulate while pregnant.