cold, dizziness from synthroid?

[cooper796]

I am a 40 yr old female and just underwent hemithryoidectomy (removal of left lobe) on Oct. 21/09.  Previous to surgery my tsh, t3 and t4 were always normal and bloodwork was negative for Grave's/Hashi's.  I had 3-4 nodules being 2-3 cm each in size.  Because of the size and discomfort it was decided to remove the left lobe.  The day after surgery the surgeon put me on 0.125 mg of Synthroid.  I have been taking this dose once a day for just over 2 weeks.  I have recently started feeling cold, lightheaded/dizzy and sometimes a little shaky.  Could this be from too much or too little dose of Synthroid?  I think these are symptoms of hypothyroid so would that mean I need a higher dose of Synthroid?  I went to my GP today and she ordered some bloodwork for tsh and (free?) T4.  So hopefully I will have some answers early next week... if I can take it until then.
Thanks for any insight.
I should also say that the biopsy came back showing no malignancy but has been sent somewhere else for a second opinion.  I think this is making me a little nervous as well.

[mrsomes]

Your symptoms could be either hypo or hyper.   My bet would be that you're either a little hyper or your levels are just fine but you can't tolerate that does of Synthroid.  I need to be on 75mg of synthroid to feel good but it took 5 months to get there.  Every little increase gave me hyper symptoms just like yours.   Scary as heck and totally interfered with my life.   Baby steps finally got me to where I need to be.   See what your tests come back as.   If they are normal you may just need to lower your synthroid dose and work your way back up.

[cooper796]

Thanks for the reply.  Did you have a partial thryroidectomy?  If so, were you taking meds before surgery?

[mrsomes]

I had a total thyroidectomy.   I had a very large multinodule goiter that decided to act up for about 6 months.  Thyroiditis I think my Dr called it.   I wasn't on meds before the surgery.  No cancer which was good.   Anyway, I had to start the synthroid right after surgery.  My endo gave me 88mg based on my weight (I was terribly thin at the time).  Right away I started to get shaky and lightheaded; had heart palpitations.   My levels weren't off but I just couldn't take that much synthroid.   Dosed down to 50mg and went hypo; up to 75mg; up to 100mg and it started all over again.   Levels were "normal" but I couldn't function.  I'm now back on 75mg and everything has evened out.   I just couldn't ramp up quickly.   Hopefully your blood work will give you some answers.