Light Period?

Hi ladies —- So I recently went thru a breakup (2 weeks ago) . It was mutual. So I felt sick and sad and had to move out and back to my Dads house until I find a place. However, I feel like a weight lifted from me, But I do have my ups and downs. I haven’t been super hungry. Anyway I just got my period on Sunday. First of all it was 2 days late... it’s usually always on time. And Normally it is heavy the first and 2nd day. Well it wasn’t... and it’s like all old, dark blood. It’s not my usual period at all. Today is the 3rd day and barely bleeding. Could this be due to stress or is something else going on? Thoughts? I’m 32 years old if that matters. Thanks!