Flomax(tamsulosin) side effects

I am 21 year old male with no sexual problem before but i dribble some drops after urine so my urologist prescribed me flomax for 15 days. My problem doesnt go away but i stopped it and now even after one month of stopping it i am not getting proper erection and producing little sperm while masturbating and sperm doesn’t come out with pressure. Before this drug i used to ejaculate with alot of pressure I am very much concerned now because of decreased libido and ed and less amount of speem while ejaculating even though i stopped tamsulosin month ago Have any one been through this and have any one recovered from this sexual problem and in how much more time this side effect will go