... and off mediation. Now I think I have symptoms of Hypothyroid. Would this be possible?. I have had some weight gain, itchy skin, constipation, sometimes trouble with concentration and muscle aches. I also have sleep problems. I wake up after four hours and have a hard time getting back to sleep. One last symptom is hot flashes. I am 76 years old and had a complete hysterectomy when I was 48. Thanks for any answers