Lastly, you just increased your dose
of Zoloft,
and it is common to experience a resurgence
of those initial start up side
effects again. Usually you would see those side effects start to abate in a week or two.
So, to recap, I would ask for a more thorough assessment/diagnostic approach with your suspected hormonal issues. If need be, your doc can ever refer you to an endocrinologist (I would personally recommend that).