When penetration was not made, you are still a virgin. Kindly note that if you miss a period , it is likely that you may be pregnat.
This will be confirmed by a Doctor who will test your urine and based on the test Pregnancy will be confirmed.
P.S. Making out won't get you pregnant. Only penetration can impregnate you. As long as you're a virgin you're fine.
If your breasts are not used to being fondled they probably would be a little sore or he may have been a little too enthusiastic too. Can you blame him? You may have very sensitive boobs like my wife. I can hardly touch hers without her complaining it hurts.
You "found out your pants had been unzipped at one point"? Weren't you there when that happened or were you too into the moment to feel it? Just be careful. Exploring and learning is a lot of fun but don't let things happen to you that you don't know about --- pay attention!!!!