How infectious is pre-cum, are there a lot of cases of people getting it from pre-cum?
Generally speaking, you do NOT meet the criteria for nPEP ( rape, intercourse w/ known HIV+ Partner, etc). If the male was HIV + ( which you do NOT know) , there was a risk. Since you did have UNPROTECTED intercourse and your partner's status is UNKNOWN, you DO need an HIV test. The odds of him being HIV + is quite low, this coupled with only a single episode make the risk you've been infected fairly low. You may test with an HIV antibody test @ 6 weeks. If NEGATIVE (i expect it to be) retest at 3 months for a CONCLUSIVE result. In the future ALWAYS use a CONDOM when engaging in vaginal or anal sex.
-JC-