Thyroid health, sex drive

So last year at the end of the year my new job didn't have health insurance as a result I put a ton of money into a new dr. And paid all outta pocket to have my thyroid checked! It turned to be quite a bit of money, because my Dr said my thyroid looked big, and apparently I just have a big thyroid. ( i paid a lot of money because i hadnt checked it in 2 years.) And again nothing is wrong. (Little of history here at 18 in 2010 I had my thyroid "killed" due to hyperthyroidism an according to two ultrasound techs an multiple test over the years it never died. But still needs checked yearly.) So lately my sex drive is through the roof and I can't help buy worry about my thyroid again. (I take no meds at all) I mean my husband is literally laying in bed pretending to sleep thinking "OMG she gonna rape me again" lol this is definitely abnormal for me I usually have little to no sex drive an sometimes it bothered me but not much. I don't have the money to check it again since I'd still be paying outta pocket but should I be worried? I don't have a job right now an I'm a bit stressed about that although I've applied everywhere. I know all this an more factors into your thyroid an hormones. Not to mention I can't seem to lose any weight! But again back to the high sex drive. Any idea why my sex drive has suddenly spiked or if I should be worried about my thyroid? I hate that I have to worry about it but it could be worse I guess.