They both have there own risks. Some STI's (STD's) or infections can be spread orally as well as through unprotected sex. With unprotected sex, you run the risk (if you are a female) of getting...
Pregnancy, STI's, Emotional Hurt, honestly the best thing to do is wait and I don't want to sound old school but trust me you'll be so much happier if you do.. I wish I had!!!