3-4 months ago I have seen family doctor who checked the cum, and said besides some bacteria (nothing serious) everything is in place (sperm count, health etc) and gave me some antibiotics. After a month of medication I had it checked again and the doctor says no more bacteria + healthy sperms, despite them being remaining yellow. After that I did another STD tests at another clinic, and the results came back clean (total clean without ANY STDs). However the my cum is still yellow and somewhat jelly-like (not very fluid). Any reasons for this? I do not generally consume a lot of sulfur-contained items. What is going on?