who do i talk to about having sex at a young age?

im 14 and i had sex around October/ November time and i have had sex 8 times now with 3 different boys 1 of them im still very close with the first time i had sex (after) i was really freaking out about it because i was scared about what i had done to myself and how it would have affected my relationship with him, i wasn't going out with any of the boys i have slept with which makes me feel even worse and the amount of boys (3) i have slept with doesn't help the situation

my mum and my sister both lost the virginity at 14 as well and we have always spoke openly to each other about stuff but i cant bring my self to tell them that i have had sex and don't feel that i should need to because its my sex life... but i have read comments from other people to other girls going threw the same thing as me telling them i should tell my mum, should i?. I keep thinking to myself that im a s*** and shouldn't have done the things i have done which is very stupid of me to do so. I have no one to talk about what i have done because i feel like i would be classed as a slag if i did tell anyone and i don't feel comfortable talking to a concealer about it ether i don't know who to talk to