After using a penis pump, the head of my penis stayed big, the skin just under the head became filled with fluid "donut effect", and my shaft got skinny. Ever since then I have not been able to achieve the same erection as before. I also do not have morning wood or random erections like I did before. I am not sure if it was there before, but I also notice a small ball shaped tissue in between the shaft and the penis head. Please help