funky smell with spotting?

Karen

Anyone experience a funky smell and discharge with & after spotting? I think it may just be my birth control messing me up(ive been on it for 8months). my periods have been so irregular to where id have 2 periods a month. Just 2 months ago it started getting monthly but this month i got it in the beginning of the week and then like 5 days later. Anyone experience something similar??? What could it be?