Can you get this STI? EDIT

This is a dumb question to ask but I forgot to ask my doctor the first time. I didn’t know I got chlamydia and she just said not to have sex for 7 days and take the pills. Well it’s been a couple weeks and I still haven’t had sex. All I did was give a blowjob once and now I’m so afraid I have it again because my discharge isn’t clear (it hasn’t been since I got it) but I don’t feel bad like I did when I had it. Can you easily get chlamydia again just from giving head?

EDIT: When I gave head I was cleared up and was allowed to have sex again I just decided not to do that but to give a blowjob one time!