is something wrong down there?? 😐

I've been having like a thick white chunky disharge on my underwear. noticed it when i got home and it smells like kind of sweet? like its so strong i could smell it through my leggings. I was wearing a thong so could it be that? why would it smell sweet... also i'm on my 2nd pack of birth control i took my 8th pill today. is it even normal to be getting discharge on the pill? could i be pregnant? help please