Is it normal for menstrual cramps to wake you up at night?

Menstrual cramps: Yes menstrual cramps can be severe enough to wake you at night. Taking ibuprofen before bedtime may be helpful

Not abnormal: While it is not abnormal it is uncommon and can be a symptom of endometriosis. Try taking naproxen starting a couple of days before your period starts. It works better if it is in your system when you start bleeding. Talk to you doctor about the possibility of endometriosis since early treatment can reduce the risk of infertility.