Having your period on the pill and being pregnant?

Or even if you werent on the pill and had your period and then found out you were pregnant what was the period like? was it lighter than usual? did it go for the same amount of days? just wanting to know as i think i might be but i still have my period on the pill yasmin... i usually have it for 5 days but its stopped and started and it started tuesday and stopped this morning and was super light... getting blood test pregnancy results back in the morning...