hi yes you should be concerned first you have not had a period for 5 months you don't use birth control? but your sexually active. i think its about time you took a trip to your doctor and get yourself tested and let him/her sort out your problem if your not pregnant. do hope this helps. good luck
why did my period stop? how can i get it to start again? . i'm 28 years old and haven't had my period in 5 months although they have never been regular. i'm sexually active but have been with the same partner for 6 years. i don't use birth control but the home pregnancy tests are negative. i've always been around 110 lbs which hasn't changed. i haven't had excessive hair growth or acne. i don't workout excessively; work was stressful for a period but this has subsided recently. should i be concerned? are there any home remedies?