Irrational anger

Backstory...my husband does IT project management and is able to work from home to be able to stay home with our daughter. I am in my first year of teaching so I was unable to qualify for a 12 week fmla from my job. My husband is great with our daughter and working from home. He sends me pictures all day without me having to ask. Well he sent me a picture the other day and I saw a cup from Jimmy John's in the background...and it made me like irrationally angry. We are doing fine money wise since my daughter isnt in daycare and we both make decent money so I wasn't upset about him spending money. I know it wasnt a lot of money so that aspect didnt bother me. Idk If its because I was jealous that he got to be home with our daughter and I am at work.... the fact that he is ordering fast food when he should be dieting.... he gained more weight than I did during my pregnancy... or if I was just being hormonal/stressed...