STDS?

So I recently found out my ex was cheating on me and so I went to the doctor and got all the std testing done that I could and they told me the only thing I had was chlamdiya so I took the medicine and I thought I was done. I just happened to be checking my chart because you can do that through an online service where I live and it said that I was reactive for Syphilis when typically people are non reactive. I guess my question is did they not tell me I had Syphilis since they were both bacterial and I had taken my antibiotic already? (I’ll call for sure on Monday this just seems weird to me)