Suggest Treatment For Fatigue With Pain And Swelling In Legs

hi there,

my gp recently sent me to an internist as I had unexplained prolonged fatigue and was feeling generally unwell a lot. all routine tests by my gp and the tests the internist carried out were normally but I still feel really unwell and don't look well either. i have recently noticed an ache in my right leg that i dont think is due to any injury and I think there is a small amount of fluid around this right knee and a new small red/pink spot about 0.6cm on the inside of the same leg just below the knee. might this be related to my fatigue etc. as I am reading online about possible joint and skin infections?