Period missed by stressed???

I've been late for my period for 5 days now and I am stressing it over.

I don't think I am pregnant caude no symptoms of it at all and its been 3 weeks since I last did it, no cum at all nor precum accidents.

But I've been really stressed over family" UNI, money etc.

Haven't been sleeping well nor eating well (one meal a day).

Do you guys think all this is causing my period to be missed???

Have this happened before to any of you?

I need to calm down...