Hi! I am 53 years old5 3 , weigh 246 pd. and I have thyroid problems (hypo) and high blood presure, sleep apnea, is it alright for me to use hcg drops, I know I can t do the 500 calories,, Itried but felt too tired,I ll eat the right foods and exercise ,which I walk 30 min. on tredmill,,Please help me ! Thank you