I Lost $30 --- :o(

I am so upset and feel really dumb. The other day I was driving home from church and I told my husband to give me the cash he had gotten from the bank. He handed me the $70 cash in a wade. The intelligent person I am thought this money will be safe in my lap. So I put the money in my lap and when I got home I dropped the money and didn't realize it until the next afternoon.
Thankfully I found $40 of it but the rest is no where to be found. I live in a very windy area so it is possible it blew away to the next county. Loosing $30 was really not what I needed right now. I am so sad :o(.