We sound like we are in similar situations. I am now a size 22w, 49 years old and have a couple of grandkids. I have diabetes, border on hypertension, have DVT in my legs AND have an inactive thyroid. Sitting all say at work doesn't help.
HAVE YOU HAD YOUR THYROID CHECKED?
I lucked out and found a doctor that prescibes natural thyroid replacement. It seems to be working wonders with lots of issues. After being on conventional Artificial thyroid replacement for years. He also prescribed CINNAMON for my sugar level and blood pressure.
You have got to get to that FED UP point. FED UP to where nothing can stop you. For me the personal blog is therapuedic. Let's face it - there are no quick solutions, no MAJIC pills. It's like I told my doctor, "I know WHAT to do, I just need to DO IT! That's where we need to be schooled.
I have a hard time with exersize. I am getting a bike this week so I can do something outside. I hate being couped up inside. Exersize helps so much. But after being inactive for so long one must move slowly and steadily increase activitey. Most people who don't exercize are tired BECAUSE they don't exercize!
Good luck!