OK, I Had My Left Leg Amputated A Year Ago.

OK, I had my left leg amputated a year ago. I am 69 year old. While in the hospital and ever since I cannot get an erection and my penius keeps pulling back into itself, way back in. This happens everyday and stays like that most of the day. I have tried a few ED drugs. This is kind of embarrassing . please help if you can. Thanks steve