need advice about conium-30

i am 28 yrs old,doing masturbation from 14 yrs, try to left it lot but don't get success.now my penis become very small,not stiff too much when erect,bent in mid after erection also,premature ejaculation occurs,ejaculate in night without any reason or dream...penis is small please suggest any treatment of penis enlargement and thicknenig also.
i m single (unmarried),nature is normal now fear from sex,donot sensitive to any climate..donot take any medicine for that..
Previously I took Ustilago-6C on advice from this forum to leave musturbation but it didn't work. Actaully i dont do musturbation with hands and generally i dont have any strong urge to do it also. But when i am on bed and some thoughts come into mind, i gets ejaculated only with very little friction on Penis (sometimes even with the bed)and it is very rapid (in 15-20 sec) that's why I am not able to control it.
It happens once in a week. I tried Yoga also but it didn't work. I am OK for one week after doing it once and for one week i feel no problem but just after one week, thoughts in the mind are so strong that i am not able to control. I still dont use my hand because i internally dont want to do musturbation but due to this quick ejaculation problem, it happens even then only with thoughts and a little friction.
I thought that this is a habit of musturbation that why i took Ustilago-6C.
Now I read in a homoeopathy book about CONIUM-30 which best matches with my symptoms. Can I take CONIUM-30 safely without any adverse effect? What should be the dose and how it is to be taken?
Little more info about me: I generally dont have good digestion. I am generally stressed, feels lazy in daytime, dont have very good sleep, have slight sweet pain in whole body especially in legs most of the time.
Please help me.

Thanks in advance