can i drink alcohol 3-4 hours after taking paracetamol?!

Occasionally, yes. Regularly, you're going to screw up your liver.

I drink 3-4 minutes after I've had a paracetamol but only a pint or two i didn't go on a binge, you'll be fine

then why drink the paracetamol?

Yeh you should be fine, never stopped me lol!