You can not get HIV from oral sex, it is not a risk. So, take that off your worry list. The only ways that adults get HIV is from having unprotected vaginal or anal penetrating sex or sharing IV drugs. Saliva and air both inactivate the virus and no one gets HIV from oral sex in the real world.
Syphilis does pose some std concerns if received unprotected. This happened 10 weeks ago? If you had gotten syphilis the person giving you oral would have had to have a sore you came in contact with and you'd develop a sore starting at 2 to 4 weeks after the exposure if you got it. In the absence of symptoms, I would not be worried. Here is an older thread by a MedHelp expert doctor that discusses risks of receiving oral sex and std's in general. https://www.medhelp.org/posts/STDs/STD-risk-from-receiving-oral-sex/show/669224