I have lymph nodes appearing in neck which is under 1cm after ultra sound, all test neg hiv-mono-ebv, elevated lymphocytes do i need bone morrow biops?

Probably not: Such small lymph nodes often are normal, and if the nodes are not enlarging, that's additional evidence against a serious condition. If any sort of biopsy is needed, it would be to remove one of the nodes, not a distant site like bone marrow. May also depend on how elevated your lymphocytes are. Probably nothing more need be done now, but discuss with your doctor.