Feeling a bit guilty

Okay so how do you girls have casual sex and not feel guilty about it? I don’t know how to explain it, maybe it’s thanks to the men-ruled world we live in that’s constantly telling us that if we enjoy of our sexual lives then we’re whores, you know? And I struggle with not paying attention to that thought a lot every time I hook up with someone (obviously being responsible and using protection). But then the next day I feel guilty for having several sexual partners, and I’m not talking about having 10 or 20 at the same time, I’ve just hooked up with like 4 guys in the past few months since I moved to barcelona. But I just have this nagging voice in my head telling me to stop being such a slut and that I should be ashamed for doing this and I hate it. It’s like I can’t enjoy sex and I just hate it.

Is it just me that deal with something like this every time she hooks up with someone? Please tell me I’m not the only one...