I went to my doctors appointment with the concern of being pregnant. I took a urine test and it came out negative, but the same thing happened with my son. So during my pap smear my doctor said I had a "purple hue" which can mean pregnancy. I'm a week late but my periods just started being regular.

I don't know why you are asking here, if a purple hue on your cervix means pregnancy, if your doctor just said it did. If you have any doubts, why not ask your doctor to explain.

Yes. It's called Chadwick's Sign and can indicate pregnancy. Wait a couple more weeks and test again. Be sure to use first morning urine.