My advice is to not allow that to happen again. First, because there are so many different diseases he could potentially have and all you would need to do is come in contact with them - whether he went all the way in or not!
.F.Y.I: the majority of people who spread the herpes virus have no active lesions (sores) at the time they have sex and 'share' it with someone else. That means the person may not even know they have herpes when they spread it around.
Also, hpv causes warts - another life long condition. If you are super lucky, you might get the high risk variety of hpv - the kind that can cause cancer!
Seriously, not wearing a condom (at the very least) is like playing russian roulette with your life and your health. Have some respect for your body and take care of it! Make your partner (long term partner too!) wear a condom
every time. No halfways about it.
You are probably very fortunate and not pregnant - but that doesn't mean you aren't 'safe'. Be safe in the future.
Good luck!