These feelings and reactions are well within the range of normal.
Don't have sex if you are not interested, just to be like others, or "be normal." You are normal, just the way you are.
It is normal to be turned off by sex when you are younger, and/or if you are particularly fastidious/squeamish. But my experience was that once I found the right person, whose kisses and touches were exactly what I wanted, I discovered that I didn't think it was disgusting, but exciting, and I didn't mind the messiness of it. I accepted, then actually embraced the mess as a wonderful, carefree part of the experience. Now, mind you, I am still not a big fan of getting a "facial." But apart from that, I like the other bits very, very much.