How would pregnancy symptoms differ after a total thyroidectomy? will i be more sick, fatigued, etc.

Not much: Tsh, fsh, and lh all share a common "arm" as hormones produced by the pituitary gland. However, while there is some cross reactivity, pregnancy is much more complex than just a thyroid hormone alteration. You will still need to be on replacement (synthyroid) therapy, but it will not affect your pregnancy per se.

No difference: If you are on a stable dose of thyroxine replacement than a blood test can be done every year or so - but, during pregnancy get lab each trimester as the average woman need half as much extra thyroxine by the 3d trimester . As long as you are on adequate replacement you will be at no increased risk of sickness or fatigue than other women.

Minimal difference: If you are well-controlled on medication, your symptoms should be similar to 'normal.'. Your pregnancy will be considered 'high-risk' and followed accordingly. With good control, it should be relatively uneventful.