u/Easy-Macaroon344

I’ve been using the menstrual cup for the past 2 periods and i’ve never had any leaks but this time i apparently can’t get it right. I started my period two days ago and i haven’t gone a single day without leaks. It’s not thick dark period blood, it’s more watery, thin and light in color. Im sure it’s not overflowing. I tried feeling it with my finger and i’m pretty sure it’s fully opened so i don’t know what else to think. Could it be possible that it’s the wrong size? It seems weird because it worked perfectly three weeks ago. I’m a teen so i use the teen organicup.