3cm swollen lymph node in groin moveable not painful ,others smaller. sharp pain in groin area, night sweats and tired. worried...

Lymphadenopathy: these are worrisome sxs. You need to see your doctor as soon as possible for additional workup. This would include CT scan of the chest, abdomen and pelvis to r/o underlying conditions such as lymphoma or other malignancy. It is also important to do a lymph node biopsy, A lot of those conditions are treatable and curable. You need to get that checked ASAP

Any fever,wt loss: Any other lymphnodes- in neck, underarms,palpable?. s you are telling 3 cm which is a big size ,if it is a node needs to be evaluated by your primary doctor . There are things in the groin which can look like lymphnodes, but not are there. Eg. Femoral hernias. hence see your doctor and needs a biopsy if it is a node-to r/o infections-including ones TB ,STD's HIV,condn-like sarcoid,lymphoma

Lymphoproliferative : You could be presenting with signs of lymphoma. You need seek help from an oncologist. This palpable lymph nodes needs to be biopsied but it has to be an excisional biopsy for definitive diagnosis