Magnum condoms, women only please.?

Well, I noticed that regular condoms fit kinda snug on me, so I thought I might try magnum condoms (larger size). They are much more comfy to wear. But I'm not sure I want the whole stigma that goes with larger condoms. So here's my question. When you're about to have with a guy and you notice him using a magnum or other larger condom what thoughts go through your head? Do you think he is just using them because he wants to impress and is trying to act like a stud, or do you get a bit nervous that he might be well-endowed? I'm secure with myself so definitely not using them to impress, they are truly more comfy. But these issues have been in the back of my mind so I've always kept the wrapper out of sight when I use one. Women, please tell me I'm being foolish and making something out of nothing, thanks. :)