Levothyroxine newbie with menstrual cycle concern.

Hi Em, well remember that you are dealing with an unstable metabolism and hormones, so to have your periods affected would not be unusual. Also it depends what other contraception you are taking along with this (more hormones). For example, the mini pill is different from the "pill", which behaves differently again from the depo injection - so all these play their part on your body as well. I'm not a doctor, obvioulsy, but yeah, keep a note of things that have changed since starting on Levo, and discuss them with your GP. They will be able to tell you in more detail (hopefully!) what to expect and how to manage it. Sorry I can't be of more help - I know how Levo has affected me, and everyone on here has their own story to tell - but I will advise on pushing for second opinions if you aren't happy with anything. Nobody knows your body better than you - even if they HAVE had 7 years training and citing from a medical textbook! :D best of luck.

Hi, Em, remember that you have been diagnosed with hypothyroid disease, which slows your metabolism, so now it looks like your current level of treatment may be speeding your metabolism up too much.  I am puzzled as to why your doctor did not start with 25mg, then wait 8 weeks for more bloods, and consider the results.  Then possibly raising the dose, this is the way i have usually been treated.  This, for me, has applied to levo and other thyroid replacement meds.  I would go back to the GP immediately as levo builds up over 6 to 8 weeks, and you are only 5 weeks in - the easiest thing you can do is know what your normal resting pulse was - itwhich will have been lower when you became hypothyroid - so you can check if your average daily pulse is the same as that was, and also to be able to assess your normal range of mood change, normal range of breathing,  and temperature , then, as the weeks go on, ask yourself if you have any sign of pulse speeding, spells of overheating,  spells of unusual anxiety or restlessness, any feeling of breathlessness, or any weight loss -  you may be going slighly hyperthyroid and certainly need a blood test. Remember to have the test soon after waking. It is all about balance, and needs change over time - your metabolism is not necessarily static. Best of luck,

Hi there!

I have been on 0.75mg levo and have found that it affects my periods too but in a positive way, eg. Less cramps, shorter cycle.

So i would say that youre not alone on that one but if you have any concerns you should see your doctor.

You could also perhaps try getting a period tracker on your mobile so you can see how it progresses over the next few months? Good luck x