How Can A Small Penis Size With Premature Ejaculation Be Treated?

sir i want to increase my penis size so what can i do for it ? any oil or tablets which has no side effects ? and i want to ask a question my penis keeps on erecting everytime its too hard too but some time my sperm comes out while doing oral sex or when ever i enter my penis in vagina i ejacualte in less than a minute plz give me a solution i am really fedup of this