Just being open

So I’ve been sleeping with this guy since January/February and that’s all it’s been. So recently I let my mom know, just because I’m almost 22 and I feel we can talk about these things. WELL I WAS WRONG. She basically makes me feel like I’m doing something wrong. She also makes it seem like women just can’t fuck to fuck, like why does it have to be a deeper issue? I can’t just want penis just because? I want to know if anyone has went through this with their mother?