Other people at the gym 🙄

So I used to workout a lot before pregnancy, but I got into a funk and haven’t been good about it for the first few months. Recently I joined the YMCA for the daycare and the family atmosphere. I’m taking it super slow because I have anxiety leaving my son in the daycare. So I go in today and the gym was empty, just two guys working out. Cool, I’ll try some leg stuff. Well I couldn’t even lift the bar (45lb) to squat it so I went and grabbed a smaller one. And I start doing my thing, deadlifts to shoulder press to squat. And I see them in the mirror looking at me and laughing. I didn’t say anything, carried on. Then I hear them saying “what is she even lifting? I guess the weight doesn’t matter these days” and they were laughing and keep on looking my way. I finally asked them if there’s a problem and they said no, we didn’t say anything. Then they looked at each other and laughed some more.

I made a complaint with the manager, because we pay a lot for that membership for some guys to laugh at me for no good reason. Did I overreact? I feel like people avoid going to the gym because of incidents like this and it’s awful. Anybody else has been in a similar situation?