I feel awful for trying to be nice. Did I do the right thing?

Today I went to my local drugstore and I overheard a Hispanic man asking another man if he spoke English. I didn’t hear the rest of their conversation because I didn’t think anything of it and I hopped in my car right away. The Hispanic man then approached my car on the passenger side and I opened my window a crack. He asked if I spoke English, then proceeded with saying that he ran out of gas and I could go and see the gas gauge and he would give me his grandma’s number to make sure he would pay me back.

Something felt off, and there’s no way in hell I’d get out of my car and follow a strange man, especially since I’m pregnant and I’m not going to get myself in a potentially dangerous situation. Plus I’m in the “bad neighborhood”, so there’s an automatic red flag. But I’m a so-called “nice person”, and according to my partner, too nice. So I gave him $5 and said “I’m sorry I wish I could help more. I’m a poor college student with a baby on the way. But I hope you get home safely”. This is when another red flag came up. Although he said thank you, his expression was confused and almost disgusted. Like a “really? Only $5?” Kind of look.

I figured that it’s only a $5 loss if he’s a scammer. And if he really needed the money, $5 is better than nothing, and I obviously wasn’t the only person he asked. But I feel oddly guilty about it. Like maybe I shouldn’t have given him anything at all? I’m not sure, and it’s really bothering me now and I feel horrible for no apparent reason. Hormones from pregnancy might have to do with it but I’m not sure. I’ve only told my mom and my partner about it and they both said I shouldn’t have given him anything. What do you think?