Well, first of all, some guys really do pull out and ejaculate on the girl in the real world. My hubby and I have done it. He loves is, though only sometimes because, well, it's messy lol. I guess maybe wait on that one until a little later, she might not appreciate it right away. And honestly, don't worry so much about the porn thing. Not such a big deal as long as you're still enjoying a healthy sex life. I don't mind my man watching porn as long as we're still having sex.
Here's what I would do about oral- While you're getting ready to have sex, it will be pretty easy and should be pretty natural for you to have your hands down there. You should. You should be gently rubbing, caressing, her whole body, breasts, stomach, genitals, etc. Don't put your fingers in her or rub her clit unless they are lubricated, either with spit or lube (lube is better because spit dries up really fast). Then you can start kissing too- and start kissing all over- her shoulder, down her body to her breasts, her stomach, her inner thighs, you get the idea. If she is uncomfortable with it, she will let you know. Most likely if she is uncomfortable it will be because she thinks she smells funky or looks ugly,or she thinks she'll taste funky, many women feel this way. It will help if you compliment her as you go (I've never seen you this way before, you're so beautiful) or (you're natural scent is SO hot) or something like that. Also, if you think this might be an issue, taking a shower or bath together before hand would help for many reasons: 1- it would help you both get in the mood and get comfortable being naked around each other 2- it will assure both of you that your genitals aren't funky and be ok with someone else being around there 3- you can start foreplay in the bath, it's great!! (but don't have sex in the bath the first time, that's an intermediate skill lol) Plus, a bath together can be damn romantic.
I personally don't think you need to formally discuss it, but having a casual, no-pressure conversation about sex in general might be a good idea. Talk to her about why she expects it to hurt- she needs to change that attitude. Find out if she's ever masturbated, or anything, and if she hasn't, encourage her to start!! If that freaks her out, maybe it would be something you can help her with later once you guys are more intimate. A woman should really be able to masturbate, or at least know what makes her feel good, in order to have successful and satisfying sex. She needs to be able to give you some direction, or you'll just be shooting in the dark!!