Bradley,
the fact is that sex between two people is another form of expression. Whether short term or long term, if you are trying to have a baby or just to have fun---it is the ultimate form of physical expression. You should never feel guilty about it. You will know when you are ready and when it is right. HOWEVER--you should know all the consequences before you proceed.
If you are going to experiment, please be careful. AIDS is a serious consequence these days and I presume the secular colleges are promoting abstinence , not for any moral reason, but to avoid the result of AIDS.
I am delighted to hear that you are pursuing higher education, it is good. When I grew up in the JWs, it was highly discouraged. I completed college any way and am no longer in that religion.
keep you mind open and keep askiing questions.
frank