These are excellent questions for your doctor or other medical professional. We are not professionals here and can't give medical advice.
I looked up zoloft's potential side-effects and did not notice any that it could contribute to any of the conditions you list. But you can ask your pharmacist for more detailed information on that.
I can tell you that some antidepressants can cause an elevation in your blood glucose levels. But medical questions like this are best answered by a healthcare professional.
Along those lines, have you discussed this condition with an Endocrinologist? Generally speaking, and again I am not a healthcare professional but I do have diabetes, levels such as this are classified as pre-diabetes. I'd urge you to get your condition under control before you become diabetic, because there is no cure for diabetes -- it is irreversible once you get it.
From personal experience, I can say that exercising and losing a few pounds might very well put your blood glucose levels right where they should be, plus help control your hypertension and cholesterol. I want to caution you that diabetes, hypertension, and high cholesterol are a serious combination of diseases that occur together to significantly raise your risk for other diseases such as heart disease, heart attack, and stroke. Please talk to a healthcare professional for more information.
My personal experience is that I was obese and had diabetes and hypertension. My triglycerides were high. My LDL and HDL cholesterol levels were bad. I was on five medications including insulin but my "numbers" (my levels) were never good. Well, after making lifestyle changes that caused me to lose weight, I got off all of those medications, including the insulin, and my numbers all are good and in the normal range. I no longer have hypertension. I do have diabetes, because as I said it never goes away once you have it, but it is managed without medication simply by eating right and exercising. It has been 7yrs now since I lost the weight and my health has not been this good since I was a teenager.