Rt knee pain x 1 week. no trauma. front lower left part of knee. feels like its folding in. anything i can do get relief? what could it be?

See a doctor : Knee pain can be minor or do significant injury that could worsen with treatment like ligament injuries or inflammatory knee conditions or simple sprain or strain

See orthopedist: Pain could be due to patellar tendonitis (try knee strap) or irritated/early wear of the patella cartilage or the surface cartilage of the thigh bone that rubs against the patella (try knee sleeve with a cutout for knee cap). Other causes could include a plica and osgood schlatters. For starters avoid stairs, knee extension machines, deep knee squats, lunges etc. Try therapy, ice, advil/alleve.