I'm 18, and my girl and I have been going out for a year and we have just recently become sexually active so I have a few questions.
1. Is it okay to use spermicidal lubrication,or a spermicidal condom, because I did research and it may harm my girlfriend. I definately don't want to do that because I truly love her.
2. We've tried anal, and once I ejaculated inside her anus, is that ok? Every time I try anal it hurts her, how do I make it feel good for her? I don't use lube, and I am very careful, and hate seeing her in pain.
3. Is it ok to use water, spit, or saliva for lube to go in her butt?
4. when I eat my girls vagina she really likes it, but I want to get maximum stimulation, how would I do that?
5. Is it ok to have anal sex or will that mess her intestines up at all in any way? I just want to make sure it's safe, okay, and won't harm the love of my life.

My girlfriend and I have been dating for about 8 months. I am 18, she is 17. I've been consistently fingering her/going down on her for several months now. Yet she has never taken the initiative as to go down on me, not even so much as with her hand. The only contact she seems able to handle with my penis is in sex, which we've tried to no avail (can't get it in). The fact that we can't have sex wouldn't bother me whatsoever if she went down on me every once and a while. What bothers me most is that she doesn't seem like she wants to get me off whatsoever. She seems literally terrified of my penis, though strangely OK with sex (I suspect this is because sex is pleasurable for her, too). Meanwhile, I am completely opposed to the idea of suggesting she go down on me, because I feel like she ought to want to anyway. Long story short, she seems perfectly attuned to receiving pleasure but not to giving it. What can I do?

I heard that women will vomit as a sign of pregnancy. How many days after an intercourse a women usually vomits? I have another doubt also. How can I realise that my partner had an orgasm? I mean without asking her.