I started taking 2.5 iu's, 5/2, of hgh about 3 months ago. About a month ago, I upped it to 4 iu's, 5/2. I have noticed the past 2/3 weeks that the heels of my feet feel weird when I bend my foot up. It feels like the skin is pulling at the corner of my heel. It feels like the skin of my heel is dry and cracked, but looking at them, they are not. Could this be a side?