So receiving unprotected oral sex puts you at risk for syphilis, genital herpes type 1, gonorrhea and NGU.
Syphilis isn't that common, and your partner would have had to have a sore in their mouth to transmit it. You wouldn't see symptoms of this for 10-90 days, but the average is 21 days, and you'd get a sore called a chancre. This doesn't cause burning, pain, discharge, etc. You can test for this at 6 weeks. If you get symptoms, but test negative at 6 weeks, test again at 90 days. The VDRL and treponema tests are for syphilis.
If you don't already have herpes type 1 (think oral sores, like cold sores but not canker sores), then you could get genital herpes type 1 from receiving oral sex. This can happen even if the person performing oral doesn't have a sore, but it's more likely if they do. The time from infection to symptoms is usually 2-12 days, but the average is 4 days. You can test for this now, and then again at 4 months to make sure you don't have it. If you test positive now, it's a pre-existing infection that you had before this encounter. About half the adult population has this, and 90% don’t know it.
You'd see symptoms of gonorrhea at about 2-5 days, if you get symptoms, and this would usually be a discharge, burning, etc. Some people don't get symptoms. You can test for this as early as 5 days. You can have a urine test or a swab test.
NGU is an infection in the urethra that is caused by anything other than gonorrhea (nongonococcal urethritis urethritis, sometimes called NSU, for non-specific). This can be caused by normal mouth bacteria entering the urethra, and the symptoms and testing times are the same as gonorrhea.
There is definitely a risk here, but oral sex is lower risk than intercourse.
Performing oral on a penis puts you at risk for oral gonorrhea and syphilis. A syphilis sore has to be present in order for it to transmit, so if she didn't have sores, you don't have to worry about that one.
Gonorrhea can be present without symptoms. It's less likely to transmit orally than from vaginal or anal sex, but it's definitely possible. It's less common than chlamydia (which doesn't transmit orally), but it's still fairly common.
I don't see any reason to get tested for HCV. It's rarely spread sexually, and when it is, it's usually anal sex. I can see maybe because she cut her lip, but if she stopped as soon as she did, there's no real risk here for blood borne infections, like HIV or HCV. Did you see blood on your penis? Blood anywhere?