In July 2017,I noticed a red rash on my body and soles of my feet. My dr gave me cream thinking I was allergic to something. Received a call Sept. 2017 informing me that I had been exposed to Syphilis. Had bloodwork done for all STDs/HIV- negative.Syphilis-reactive. RPR 1:128 I was given 1x Dose of Bicillin LA injections. I went back for a follow-up on April 2 and my RPR is 1:4 but everything still says reactive. What does this mean?