What does it mean when your period is four months late?

Answer 1

I'm not a doctor, however this may be a sudden decrease in estrogen levels. I've seen this in a friend several times who had testosterone poisoning, she also occasionally bled for months at a time. Just go see a doctor. It's a pain but more reliable than the internet.

Also, though it's rather obvious, you may be pregnant. However many cases of optopic pregnancies don't show up for at home tests, though they may still stop your period, and these pregnancies are dangerous.

Suck it up and see your doctor so if it is serious, they can catch it.