I wouldn't worry at all about the kissing.
Symptoms include discharge from the penis, sores, lumps, bumps, pain with urinating, etc.
Aj
What clinical symptoms should I watch out for? Since I kissed, do I need to check my tongue everyday now?
From oral sex, you can get gonorrhea, syphilis, NGU and genital herpes type 1 (though if you have it orally, you don't need to worry about it).
You can test for gonorrhea and NGU at a week, syphilis at 6 weeks. I'd suggest getting a herpes test (a type specific IgG herpes test) now and if its negative, test again at 4 months.
Overall, your chances of getting an std from oral sex are lower than if you had intercourse, but its still a possibility. Getting syphilis from french kissing is possible, but unlikely.
Aj
**** = oral sex... Also, should I worry about syphillis from oral sex and french kissing?