Hello dear, Hypoechoic masses in uterus are mostly fibroids which are benign smooth muscle tumors and nothing to worry about and usually regress after menopause. Average age of menopause is 51yrs. So if you havent attained menopause as yet , you still can wait provided you periods are not irregular and bleeding is not heavy. Incase you have these problems you should see a doctor. Fibroids need to be managed if they are symptomatic in the form of menstrual problems (heavy bleeding, intermenstrual spotting, passage of clots)or if fibroids are significantly large in size. In your case the size is significant especially of the anterior wall which is around 6cm which can later lead to compression symptoms like urinary complaints or abdominal pain. So for now i suggest you meet up a gynaecologist for an internal examination and get an endometrial biopsy. As endometrial biopsy will confirm the nature of the masses to be fibroid and if no malignant changes are there. If your biopsy is normal, you can surely stay relaxed and these would resolve after menopause. Dont worry , endometrial biospy is a minor procedure and you should get it done if you have menstrual irregularities or heavy periods with hypoechoic masses in uterus before you get any major procedure. take care