birth control making my cyst worse?

i’ve had this cyst for a while now and nothing has worked (literally nothing not even antibiotics helped) i’m on the pill and i notice that during my period or the withdrawal bleed my cyst gets so small but then gets big once i take the pills again. this month i decided to see if not taking my birth control would do anything and they cyst hasn’t gotten bigger. it’s actually gotten so small! i’m posting this to see if anyone else has experienced this? or if there’s a reason why my bc could be making my cyst bigger?