Is it normal to get so emotional over rejecting a gift?

My mother got me a candy as a treat recently when she went to a store that had an old soda fountain and some retro candies. It was a long stick of Laffy Taffy, cherry flavored. Not one of my favorites, but something i would still eat. I thought, cool, nice...i'll save this for when i am in the mood for it, and put it aside. I was cleaning this afternoon and saw it. Decided to look at the ingredients and i saw a bunch of stuff like corn syrup, sugar, palm oil, another type of oil, red 40.... it just turned me off. I told her i did not really care for it and asked if she would like to take it back. I felt a little sad about it.... i am, by nature, a very sentimental person. Rarely throw stuff away from family and friends, don't like to reject gifts. My diet is not great but thinking about eating that candy made me not want to. This was right before i left for work and i was feeling very depressed, and started unexpectedly crying on the way to work. I guess i know it is not really normal, but want to see what other people think about it, since it disturbed me and there is not really anyone i can talk to about it. I also cry over things like songs in kid movies. Anyway, i felt so bad that i resolved to eat the candy later on when i get home. I did say to my mom that i felt bad and she said she did not mind.