i lost my virginity and haven't told my mom

So I just lost my virginity February 11 to my boyfriend. I'm 15 and let me just say that shit hurts but I'm happy with my decision but I haven't told my mom. I'm afraid of what she might do or say cause she didn't want me to lose my virginity yet (which I understand) but I just felt ready ya know. I don't want her to look at me differently because that's what happened with my brother. My mom and I are pretty close but I don't know how she will react. Should I tell her or wait for little bit?