Is there any way to see if the girl is still a virgin? By looking at her face closely? Or any changes in her?

Lately I am afraid of any sexual contact.

I'm in a wonderful relationship and have been with this same person for the past 4 years. We have been having sex for 2 years, and thus far it is always both extremely safe and mutually satisfying. We have never had a sexual encounter that felt unsafe, and we talk about sex really openly.

I have no idea why I suddenly am uninterested in sex. Mentally, I want to be intimate with him. However, for the past two weeks I have physically flinched whenever we try to do something. I am not experiencing any physical pain, I just get scared. I have not experienced any sexual assault or abuse in the past (to my recollection anyway) and I completely trust my partner.

What's wrong with me? How can I learn to feel comfortable being physical again?

The only factor that I can identify as a possible explanation is that recently I tried watching porn a few times. I found it satisfying, then eventually got weirded out by how offensive it can be and the way it makes sex seem very public. I like sex to remain within my relationship, and to be very private. I felt guilty after the porn thing, and maybe that's why I'm still freaking out, but I don't know. I don't have any conscious guilt about that anymore and don't have it on my mind when we attempt to have sex. I therefore doubt that this is the real reason for my recent fears, but cannot come up with any other possibility.

Any ideas?

How often do parents have sex?

Since becoming sexually active, I feel like my menstrual flow has changed and that my cramps have been worse. Before, I hardly had any cramps but now I really feel pain during the first day of my period.

What happens if I have sex more than once in one day?

My boyfriend recently started kissing my breasts and sucking on them. How far is that? Is that considered "sex", first base, second, third, or fourth. By the way, what do they all stand for?