Hello, I had a laparascopy 2 weeks ago, one incision has healed, but other one at my navel doesn`t getting any better. Its red, tender under skin, has yellowish discharge, and hurts so much with increasing pain. I went in to surgical unit where I had the surgery (as we advised to do in case of the problem) there they contacted my surgeon and doctor who advised me to go to A&E for a check, because they weren't at the unit at that time. I went to A&E where I've been turned away with only painkillers and done nothing for the wound. I though I might be over reacted a bit, but my wound getting worse, and pain increase. What can I do?

I can't believe you were treated that way! CALL the surgical unit's desk and demand help for INFECTION. Or go to the walk-in clinic. I don't know what sort of place you use. But I would be more insistent with the area where you had the surgery.
Meanwhile, wash 3 times a day (or more) with peroxide and soapy water, rinse well, pat dry, and keep tight clothes away from the area. Tape a small gauze pad over it, with a little anti-bacterial ointment, all available at a drugstore. That might be enough unless the infection is more internal.