Is My Loss Of Appetite After Swallowing Semen Due To That Or My Recent Stress?

hi, after I have performed an unprotected sex that I have swallowed cum at the end with my mouth, I don t have the appetite to eat breakfast and lunch. Do you think it is due to the cum or due to my mental conditions (I used to be stressed with studies and family issues in the past 2 months and I eat less than before.)