I had a comment made to me yesterday when I was in the gym and I’m not sure I’m happy with it but I want to check I’m not being too sensitive.

Basically I was waiting for my gym class to start and I got my sister to tighten my bra straps for me as I had a really horribly uncomfortable bra on. After she tightened the straps I fixed my sports bra so it covered my regular bra and ‘adjusted’ myself so everything was being supported properly. 

I tried to be discrete doing this and didn’t realise anyone was looking at me but one of the male instructors (who was talking to a young guy at the time) suddenly goes ‘hey don’t do that in front of this young gentleman’ and like shielded this young guys eyes. 

I just kind of laughed awkwardly and didn’t say anything because I felt embarrassed that someone had seen me make my ‘adjustment’ and the young guy looked embarrassed too. 

Then the instructor goes ‘I saw nipple then! Did you see nipple?’ Well I nearly died. I just said ‘don’t say that’ and then walked away. Now I know he didn’t see anything because I was only fixing my bra, I didn’t expose anything but it just made me feel so uncomfortable. 

The instructor is in his 50’s and is the kind of man who constantly makes jokes and makes fun of people and honestly I’m normally fine with this, like he has made jokey comments to me before but never like that and it was in front of so many people and he said it so loud. I don’t know if I’m being too sensitive though as no one has ever said anything like that to me before so I have no experience in dealing with something like that. 

Basically my question is should I just let it go or do I make a complaint about him? As I said, I’m not sure if I’m overthinking it and am just interested to hear what others would do.