Thank you so much for your reply!! It does bring some peace of mind but I'm definitely going to get tested because I'll never forgive myself for giving anything to my fiancée. Thank you again!!
1) Unprotected oral is low risk for std transmission. Most people would move on from such exposures unless symptoms appear. But, you seem anxious so you could get tested for peace of mind.
2) After 5 or 6 days, you can tested for gonorrhea and chlamydia. In four to six weeks, you could get tested for Syphilis unless symptoms appear. In three to four months, you can get tested for herpes unless symptoms appear early.
3) Unprotected oral can bring out gonorrhea, chlamydia, herpes, and syphilis. But, these are likely not possible if she told you that she has been tested yearly. Most people tell the truth about their status and most CSW get tested not only to protect their clients, but to protect themselves from harm.