I am 21 years old there is excess of shrinkage in my penis and it is very loose my erection time is 5-10 sec only in erection there is no any hardness in my penis suffer from pe and ed penis size also very very much short just like micropenis or kiddy baby penis suffer from hypothyroidism overweight slightly no any hormonal problem testosterone lh fsh prl is normal what to do for hard erection penis enlarge avoid shrinkage and for long time discharge I have no any stress neither I smoke nor drink.