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strange menstrual cycle when levo increased-anyone else?

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Old 04-18-2009, 03:39 AM   #1
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strange menstrual cycle when levo increased-anyone else?

I was just wondering if anyone else had experienced changes in their menstrual cycle after having an increase in medication?

My levothyroxine was increased from 100mcg to 150mcg at begin of March as my Tsh levels were 4.88 and free T4 levels were 13 and the endo wanted to bring down my tsh levels. Within a week of starting on the increased meds I started getting all sorts of horrible symptoms (mainly related to being hypo which is weird with the meds being increased) but also my breasts were unbelievably tender to touch and had very sever PMT symptoms. My period started 2 days early and only lasted 2 days (where as I've always had a regular 28 cycle lasting 4-5 days) and then this month (still feeling absolutely rubbish) the breast tenderness started about 5 days before my period should have been due but it started 3 days late and again only lasted 2 days!!!!

I was just wondering if anyone had experienced this after increasing their meds or if it has something to do with the hypothyroidism itself (I was discharged from the endo the same day as she upped the meds ad she's now quite happy my levels are within normal range even though I'm having lots of hypo symptoms and not functioning properly!!)


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Old 04-22-2009, 06:38 AM   #2
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Re: strange menstrual cycle when levo increased-anyone else?

Hi Jo636 - I've not experienced those types of symptoms "after" starting medication. I was experiencing those types of symptoms before starting meds and somewhat afterwards. I've had issues with my estrogen for a while. My thyroid doctor is concerned about estrogen excess and breast cancer.

Higher levels of estrogen will cause all known PMS syptoms. I've even read that excess estrogen can lead to thyroid and adrenal issues, endometriosis, fibroids, PCOS, infertility, mood swings, low libido, constant headaches, migraines etc. Our estrogen to progesterone ratio ought to be balance and testosterone ought to be at a certain level. If all these things our out of balance, too high/low it will cause problems.

Unfortunately not a lot of doctors will look at all the various things which need correcting besides the thyroid. I'd look first at all your hormones, including your adrenal function. I've resorted to a naturopath to help balance my estrogen levels and my thyroid doctor is fine with this. My cycles are more regular, lighter and my PMS symptoms are less.

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