From february 2019 lymph nodes inflamed up to 1 cm very painful just cervical and very big rigidity. i performed the analysis for hiv, hepatitis b and c, antinuclear antibodies, blood smear, toxoplasmoza, borellia, cervical mri.help me please?

You can be confident the cause is not any of the infections for which you were tested. Hard to say anything about the MRI, since you don't say what it showed. No distant forum can solve this sort of problem: you need to see a doctor in person. If abnormal lymph nodes are confirmed or suspicious, biopsy to sample or remove one of the nodes may be required. Good luck.