two periods in one month?

taylor • mom of my little angels Scarlett 10/17 💖and Adonis Gabriel 09/09💙

Right now I’m very concerned. I’ve been having two cycles a week apart from each other each month since March. Normally I’m regular. I currently breastfeed a 19 month old & I have been taking birth control since November with no problems & discontinued the birth control in March when the two periods started. Currently I have no other symptoms. I’m scheduling an appointment with my GYN on Monday. Has this happened to anyone before?