Your elevated TSH of 10.70 mIU/L suggests your thyroid is still underactive, which directly slows digestion and worsens IBS-C symptoms. Since you recently increased your Thyronorm (levothyroxine) to 75 mcg, it can take 6 to 8 weeks for your TSH levels to stabilize and for your bowel habits to improve. Please continue taking your Lubowell (lubiprostone) as prescribed, ensure you take your thyroid medication on an empty stomach first thing in the morning, and follow up with your doctor in a few weeks to recheck your TSH levels to see if further adjustments are needed.

Taking your daily dose of Thyronorm (levothyroxine) 100 mcg is not only safe but incredibly important during your seventh week of pregnancy. Your developing baby relies entirely on your thyroid hormone levels for healthy growth and brain development right now. Continuing this medication poses no risk to your baby; in fact, keeping your thyroid levels stable prevents complications. I highly recommend contacting your obstetrician or endocrinologist soon to get your thyroid levels (TSH) checked, as dose requirements often increase during pregnancy.

You are proactively managing your health. For your weekday-only Thyronorm (levothyroxine) routine, you should typically get your thyroid function tested every 6 to 12 months once your levels are stable, or sooner if you experience symptoms. Regarding your lovely 2.5-year-old daughter, please don't worry. While a genetic predisposition to thyroid issues can run in families, the risk of her developing it now is very low. Simply mention your history to her pediatrician during her routine checkups for peace of mind.

A TSH of 0.05 is low, which suggests your thyroid is currently overactive. This can sometimes happen after childbirth due to a temporary condition called postpartum thyroiditis. Since you have stopped your Thyronorm (levothyroxine), it is highly recommended that you contact your doctor or endocrinologist to have this evaluated. They will safely monitor your levels and determine if any treatment is needed. Please rest assured that these postpartum fluctuations are very common and manageable, but a quick professional check-in is the safest next step.

For your weight of 56 kg and a TSH of 11 mIU/L, a common starting dose of levothyroxine (Thyronorm) is usually between 25 to 50 micrograms daily. Because everyone's body is unique, your doctor will tailor this dose specifically for you and likely recheck your TSH levels in 6 to 8 weeks to ensure it is perfect. For the best results, remember to take it on an empty stomach in the morning.

It is very common to experience irregular periods while breastfeeding, as your hormones are naturally adjusting. However, feeling unusually cold while taking Thyronorm (levothyroxine) could suggest your thyroid hormone levels need a quick check. Postpartum changes can alter your body's thyroid needs. I gently recommend sharing these symptoms with your doctor. They can run a simple blood test to see if your levothyroxine dose needs a minor adjustment, which should help you feel much warmer and more comfortable.