I have painful swollen lymph nodes all over my body with out a fever and cbc came back ok this has lasted for 29 days?

Lymph nodes: If there are swollen lymph nodes that are tender and have been present for almost a month it may be reasonable at this point to be checked by a physician. While you do not have a fever and your labs came back normal it may still be advised to have a complete physical exam to make sure this are slightly. A biopsy of a lymph node may also be advised but i would recommend being evaluated first.

Could be serious: Do you have any HIV risk factors? An HIV RNA or p24 test should be considered. You could also simply have a protracted viral illness, another std, a fungal infection, tuberculosis, autoimmune disease like lupus or a form of cancer. You'd better go back for a recheck...

Monitoring Centers: Lymphatic system absorbs/carries things too big to go into the arteries/veins like bacteria eaten by white cells/digested food. Lymph nodes "taste" the lymph everywhere for bad stuff like bacteria/viruses/cancers, etc. When it detects a problem, it alerts the immune system and your body reacts. They enlarge in response to the inflammation they create when they react. They shrink when all is well.