I have read through your site, and believe I know the answer, but sometimes it feels better to have a more personal response.

I 40 y/o female gave a “mini blowjob” to a coworker today-Please do not judge as I know it is wrong. I have no reason to think he has any infection- but the thought of him transmitting chlamydia to my throat bothers me- 

What are the chances of him transmitting chlamydia to my throat if 

1. There was no deep penetration to the throat

2. There was no ejaculation

3. Felt like I was being used so stopped after about 1 min 

4. He is 46 yr married male nurse 

If he did infect me- what are the chances I would pass on an oral infection to someone else via oral sex? 

Should I get tested? 

From the sound of things your partner was low risk.  In addition, the FACT is that most people do not have chlamydia and most single exposures of any sort do not lead to transmission of infection in the unlikely scenario that your partner was infected.  In particular, chlamydia rarely infects the throat, even following know exposure.  

The likelihood that you were infected in miniscule- likely less than 1% overall as a guesstimate (there are no good studies on this topic).  If you were infected, your risk of transmission to others would also be low.  If you are concern, the best way to be sure you were not infected is to have a throat swab for chlamydia.  It is easily performed and the surest way to rule out a possible infection.  Tests of this sort are easily obtained with confidentiality.

I hope this information and perspective is helpful.  EWH