I'm a mum of three, and after my baby was born I was diagnosed with under active thyroid and started Levothyroxine 50mcg. After a while this was increased to 75mcg which helped energy levels. However, within about 6 weeks of this increase 6/7 months ago I started to notice abdominal pains. I've had various tests and scans but so far no answers. Ca125 blood test is elevated but not alarmingly high, and my pelvic scan clear. This suggests inflammation somewhere in abdomen. I'm wondering if it's possible that Levothyroxine is causing this trouble, and have noticed abdominal pains listed as an uncommon side effect. Has anyone any experience of Levo causing persistent problems?