i need some help please reply!!!!!!

I have been on oral birth control (the pill) for a few months now- maybe 6-8 months. I've done research and my body should be adjusted to it.

However, about a month ago, i had breakthrough bleeding, but i still got my period on the "period pills". But this month, i had breakthrough bleeding but it was very very light spotting (practically NOTHING, meaning a few drops or so) but my discharge is very different (almost like flem that u cough up when ur sick) and i took the "period pills" and my period just hasn't came- no more spotting, just lots of discharge and the texture and colour is different. i had unprotected sex not long before but we thought it would be fine due to me being on the pill. please help me, is this normal? or is my body just taking an extra long time to get use to it?? i have been more tired lately as well but not sure if it has anything to do with it. Please let me know what u think i'm kinda worried.