Thank you for your answer. I am going to get checked out the 27th. Was your friend still able to have children? I am SO afraid that I will not be able to have kids.
Stress can greatly impact your cycle, but I would definitely go to a doctor. A friend of mine went for months without her period and they found a non-cancerous tumor in her uterus. I can't say for sure, obviously, but it's something you should get checked out.