I got my vdrl test positive and tpha positive. Vdrl titre was 1: 16 initially, then I undergo treatment. I took 3 penicillin shots along with tablets, then I tested after one month it had reduced to 1: 8, then continued my medication with tablets for next 21 days it was same, and again continued with tablets it came 1: 4 after 21 days, then again continued with medication it came to 1: 2, but after this again I continued with medication it started increasing it became 1: 4 and then I got 3 penicillin shots and tested again now it's 1: 8, I don't know y it is increasing while I am going with the treatment. Please suggest.