I s oral sex ok?

Yes: ... Unless most other species of mammals are doing something profoundly wrong. Do remember the risk of some sexually transmitted diseases (famously syphilis and gonorrhea) is very high with oral sex. And you are crazy to have any kind of sex leading to ejaculation with a woman you do not know very well -- nowadays you may be tricked into becoming a father.

Absolutely: But carries risks similar to those associated with sexual intercourse. Stds occur, notoriously syphilis, gonorrhea, herpes, and others. So you must know your partner well and protect yourself if possible.