Levothyroxine and periods

[DobbySocks]

This month I started 25mcg of Levothyroxine with a TSH of 4.8.

Prior to this, my periods were variable but always arriving monthly. I’ve continued tracking ovulation and am currently on cycle day 24 with no positive ovulation test as yet. This is later than I would usually ovulate and does mean I now won’t have a period in March, if the tests are correct. Just wondering if my body getting used to a new hormone could’ve caused a slight delay as things attempt to regulate within my body and if anyone else has experienced similar?

[Kiedy84]

Hi yes that's possible, I have seen similar posts in the past. But also negative opk doesn't mean that you haven't ovulated.

[DobbySocks in reply to Kiedy84]

Thanks for the response. I was questioning the negative opk but I’ve had a positive every month of tracking since November. I guess I’ll have to wait it out and see. If it is the medication hopefully it doesn’t throw out my cycles for too long.

[Angel_of_the_North]

The normal starting dose for an adult is 50mcg. I'd query why you are on such a low dose (which can often make you feel worse) and are not being treated according to the guidelines.

[DobbySocks in reply to Angel_of_the_North]

It was a fight to get myself started on treatment at all. They were only prepared to start me on a low dose.

[luckylucky]

Tsh of 4.8 is with in the normal range. Any reason why they started you on Thyroxine ?

[helvella Administrator Thyroid UK in reply to luckylucky]

It depends on the range! There are many labs where 4.8 is over the top of their TSH reference range.