I ovulated on the 20th of this month... tonight when me and my hubby did the deed I had some pink when I whipped.. am I pregnant?

Well this happened with me as well, around the same time (ovulation) and so I went to my OBGYN and she actually found abnormal cerivcal cells on my cervix. Took a biopsy and turns out I have CIN 1 cervical dysplasia. Could be pregnant, but could be other things as well. "Bleeding" after sex is never good. Just thought I'd share my personal experience.
Good luck :)

Spotting after sex is not an indication of pregnancy. Like everyone else, you will have to wait until you miss a period and then take an hpt using first morning urine.

Here's a site that might help;

When Does the Egg Implant? Implantation Signs

Occasional spotting after sex can be quite normal due to irritation of the cervix, either from dryness and/or being a bit rough. If it happens regularly, then you would want to have it checked out.
Could be that you are pregnant, but as was said, you'll have to wait a bit longer and try a test to know.