non stop bleeding

i’ve been on the pill for more than month now. i started taking it on the first day of my period that month like my doctor instructed. instead of my normal 4-6 day period, mine lasted 20+ days. i know this is a common thing when starting the pill so i wasn’t worried. i stopped bleeding around a week ago. today i masturbated with a hairbrush handle (cuz i’m poor af) and i started bleeding again. it’s chunky and stringy and does different than my normal period and the long one i had and i’m starting to get a little concerned. help :”)