Welcome back to the STD forum. I'll go directly to your questions.
1) It is unlikely your partner had chlamydia. More than any other STD, chlamydia is a disease of youth. In testing programs around the world, 80-90% of all infections are found in women under age 25 (mostly age 15-20), and it is quite rare above the age of 30. (In the US, it is recommended that even the most sexually active women not even be tested for chlamydia if over age 25.) And in your partner, the odds she is infected may be even lower than usual, given her assurance she doesn't have any STDs.
2) If your partner had chlamydia, your risk was substantial (maybe 50%?) from the unproteced vaginal and anal exposures. There is little if any risk from oral sex, which is rarely carried in the mouth or throat and therefore cannot be transmitted by oral exposure.
3) Three days after the last exposure is fine for reliable chlamydia testing.
In summary, combining the low risk you were exposed to chlamydia, if your test is negative, you can take it to the bank.
Based on your other discussions on this, the family medicine, and the HIV community forum, you seem to be a nervous sort, freaked out pretty easily after low risk sexual exposures. In view of that, I suggest you get into the condom habit, maybe even for oral sex. It is true that oral sex carries little risk for STDs and none for HIV -- but given your anxieties about it, you probably would avoid a lot of stress. Please think about it.
Regards-- HHH, MD
Thnks Doc H
Thank you for humouring me. I am not actually that stressed about this one (compared to my other postings). However I value your professional opinion and I will await my test results
Thanks again
sorry. Sentence should read: She assured me she was clean