I'm worried I have a blood clot. My left thigh was tender a few days ago, and now is slightly aching? No other symptoms im 19 healthy what u think

Pain. the best thing to do is to be evaluated for dvt with a sonogram
trauma ? can also be the reason for localized discomfort
dvt pain is not usually localized.
Unlikely. Blood clots are more common in the calf than in the thigh. You would also see swelling of the leg, so it is bigger than the other leg. Your pain may be muscle strain, but if there is any doubt, see your doctor.