I have a question
I have been on the pill practically forever, I started a new pill 3 months ago and just finished my 3rd pack.
When my period came it only came for 2 days with a light flow , to light to even fill a tampon and then abruptly stopped like it was never there. I'm still bloated and have gained some wait 2 days after the period I had a thick cream discharge which is also not normal to me, some iratation.
I'm assuming it would be a yeast infection but this does not explain my period I have never missed a pill and am sexually active. Is there any possibility of pregnancy or a yeast infection messing up a period?

No because is 100% effective, so yes, there is some chance of pregnancy. Switching pills can throw off your cycle, so that may be the case here, at least as far as your period is concerned, maybe your body is still adjusting.

A yeast infection should not effect your period. If you're not sure if it's a yeast infection, you should probably go to the dr's to find out for sure what it is and how to treat it, if it is in fact something that needs treatment.