Paramedic placement

Could anyone give me any advice ?

So I was at placement and not with my mentor I was just put to work with other paramedics I simply asked a question on what exactly he wants me to restock and he told me but when we were driving back for our break he must of been talking about me but I didn’t hear until we started parking up and he said something like “I know your a first year but u shouldn’t be that stupid “ this made me feel upset , stupid and has put my confidence down a lot . I ended up feeling so bad that I sat in the toilets crying trying to calm myself down . I don’t know if he treats every student like this or it’s just me . I know that he thought I couldn’t hear him and that why he carried on . So he could have said a lot more thing without me actually hearing . I would have appreciated it more if he talked to me and addressed the issue and helped me learn as it is my first placement . However he just talked and criticised me to the other paramedic . But I’m not sure if this is bad enough to talk to an OM about . So is there any advice on what to do when things like this happen . In my opinion I don’t feel like I asked a stupid question I just wanted to make it clear what he wanted me to restock .