 [ Symptoms ] why am i not menstruating  i am 19 years old and i have not had a period in 6 months i can 100 guarantee i am not pregnant i am not overweight i do not exercise really intensely and i do not really have anything to seriously stress about i moved back in january but i have had a period since then so i do not think stress from that is the problem i have chronic constipation which may or may not be ibs could that be what is causing this i want to make sure before i go get looked at and told that is what it is [ Disease ] hi it still looks like nits your hormones getting out of whack when it comes to your body having a period you have 2 hormones estrogen and prodgesterone its this second one that triggers your womb to shed its lining so if there out of whack due to your ibs its not happening ok thinking perhaps being on a bc pill with a high prodgesterone will help solve you problem you would need to put this theory to your doctor or gyno do hope it helps you good luck