How many ?? Get a small stress and body changes???

Yajaira • Head start substitute love kids as for now my dogs are my kids ♥
I had a small anxiety attack in the beginning of the month and now I thinks that's why my period didn't come and I now I am not pregnant cause I have done test, the same thing happened back in April and I didn't get my period for like 2 months so has any one else had high emotion or stress and the body reacted this way??