<s>[INST] Hi I have a mirena fitted 9 months ago, for constant heavy periods. It hadnt made any difference. I had a previous one for 6 years which worked like magic and I was period free for most of those 6 years. Now I have been prescribed northisterone which I have been taking for two months, with a break in between as I am waiting for an ultrasound to check if the mirena is ok, as its not helped as before. The problem us, Ive started cramping and bleeding while taking northisterone! Will it stop? I also have transexamic acid to take, will this help stop the bleeding. I dont want the ultrasound cancelled because of the bleeding and Im sick of this bleeding more than not. Can you advise please? Mandy [/INST] Thanks for using ChatDoctorYes tranexamic acid do help to reduce bleeding. Continue to take this medication as your doctors prescription. Though you are bleeding ultrasound can be done, not a problem. As you had responded well in previous IRENA, this time also we expect a good response. Better to rule out other endometrial problems. Consult your gynecologist for further evaluation. Have a good healthRegards </s>