[Always *]

It's actually normal for your period to be lighter once you go on the pill. I, for one, have slightly heavier or lighter periods some months than others--to the point where some months I have a period for like a day. There is nothing to worry about I don't think. Half the point of being on the pill is so that you have the option of not needing to use a condom, they both work as protection against pregnancy, but obviously only condoms work for STD's which is why I think there is that conception about them being better, but if your in a monogamous relationship where both partners are STD free then you are ok with using the pill only. So I think you are fine, the chances of pregnancy from what your describing is pretty low.