I feel bad after doing nice things

So I feel weird just saying what I did because I believe you shouldn't share good deeds it should be done out of love not Recognition. But I need to explain so you understand. At the gas station a man behind me ask for 2$ on his pump he had his kid in the car. I had a extra 5$ so i want to him and said i hope this isn't awkward but I heard you say 2$ there where time it was all I had to get to work and could have used a helping hand, I have a 5$ I like to give you to help. He thank me and hugged me and left. After I thought he didn't get the gas.. what if he used it for drugs then I hurt him didnt help. I once took a girl and her baby that where pan-handleing grocery Shopping because she was asking for money for food and I was afraid she just use it for drugs.so we went to the grocery story she picked her stuff and I paid. I felt bad for days that I spent that money and didn't even know if she really need the grocery. It feels crazy even as I text this but mabe that will help me just to put it out there and see how crazy my thoughts are.