Hypothyroid Train NEED HELP

ok, so my last weigh in was November 20, 2012... I weighed 118 lbs. I have since moved to California... and since my move, here are the changes...

I now weigh 135 lbs... so, 2 months, I have gained 17 pounds... is that even possible??

Factors...
~I'm on thyroid medication and have been for 2 years... I ran out at the end of November and restarted in January.
~I moved from Hawaii (where it is very Humid) to California (where it is very dry and cool)
~I've missed my monthly for the last two months but showed negative on a pregnancy test.
~I've been monitoring my Basal Body Temp for the last three weeks and am usually around 96.81 - 97.33
~My diet consists of lean meats, lots of veggies and fruits, occasional carbs from crackers and chips, yogurt and nuts daily.
~I have been sugar craving lately, mostly chocolate.
~I've had lots of symptoms of pregnancy.

Any Ideas? I could really use some help!

Since I am new to California, I do not have medical insurance here, only in Hawaii so cannot see a doctor yet...

Ugh! Please Help!
Tonya