Yesterday, my sister showed me bumps under her tongue which I do find awkward. They were very small and wasn't oozing or anything, but I got concerned. I read online that it may be syphilis or herpes. The bumps are gone as of now but she does have a cold like symptoms( Sore throat,runny nose) no fever. If it is syphilis or herpes etc what are the chances of me catching it from drinking behind her and eating behind her? Thanks in advance