Sounds like you are not ready to be messing with the fire you are messing with. I think you need to cool off for awhile til you are ready for the flames.
I went a little farther than I usually do with this guy and now I regret it. Im not sure if it's because of how I feel about what happened or what my friends think?
Live and learn, if you've crossed a boundary you feel ashamed about, know when to say "No" in future. You cannot make yourself ready for something that you are not emotionally equipped to deal with, you're either prepared to accept the consequences and want to do something, or you feel peer pressured. "If in doubt, leave it out."
Use good reliable birth control daily.
Learn from your mistake and don't do it again
In every situation always protect yourself.
Think a head. What could tomorrow bring.
Is that what I want my life to be ?
You deserve the best for your self and your future.
There is both healthy shame and unhealthy shame.
Work out which it is for yourself---understand what boundaries you can establish that will make you comfortable with your actions in this area in the future.