Can you really get Menopause after an ectopic?

It is unlikely you will be going through menopause as you still have your ovaries and you are very young. Sometimes the emotional upset of a failed pregnancy can cause periods to become irregular. If you have had negative pregnancy tests and are not displaying any symptoms of pregnancy I wouldn't worry. Give it a couple of months to see if things return to normal and if they don't, then go to you doctor.