Help-Using の to express questions

I use の at the end of sentence to ask questions a whole lot. Things like 「食べるの？」「どこなの?」「行ったことあるの？」etc…

I read somewhere that this is more of a feminine way of speaking and now I’m wondering if that’s the case and I if sound unnatural saying it.

Would have been nice knowing before using it for 3+ years straight lol

Thanks in advance

Edit- Might be implied but I’m a guy