If I had sex on 12/19/2011 and got my period on 12/23/2011 could I still get pregnante?

Could you GET pregnant (which is the correct spelling)? Yes.

ARE you pregnant? 99.9% no, not if you had your period.

You really should know more about pregnancy if you are sexually active. Here is a good site: Pregnancy Center - WebMD

I don't think so because it takes three days for the egg to fertilize and if it's been four I think you're fine

OK, so I have irregular periods, and I had a period last in February around the 22 or so.. but I ovulated, now I missed my period, have spotting, reallllly bad headaches, and period like cramping, I feel like my period is going to start , but doesn't, I have taken tests, but all came back - HELP!

Ummm... well if they're irregular then you're probably going to start if you're having period like cramping and symptoms. However, if you've been having sex then you need to go to the doctor to be sure. I would advise getting on birth control to regulate your periods and also for contraceptive obviously

I had my period last month, but it came late. This month I am late again but I'm only spotting. Does this meean I'm pregnant?