Had intercourse few days back,a day or two later and now have a puffy/swollen clitoris. anything i can use to relieve it.is worse when i sit down and pressure is added on?

The issue here is whether this is uncomplicated trauma from intercourse or whether there's infection. The presence of spreading redness favors infection which should be evaluated & treated by a physician or gynecologist. If not infected, cold packs to reduce swelling as well as Tylenol and ibuprofen for pain and inflammation should help. After a day or two, switch to warm compresses.