Rape....

Ashlyn
When I was 14 a friend of mine, who was 18 at the time (I hang out with older boys because I skateboard) said he wanted to hang out so I went down to the park to see him. He said "I want to show you something" and took me down to all these trees. He sat down and gestured for me to, so I did. He began kissing me and I stopped and said no but he insisted it was fine and kept going. Eventually he had me on my back and asked if he could have sex with me, I said no multiple times. However, he went ahead and did it anyway. He had his arm across my collarbone and I could barely breathe. He pulled out but came right near my vagina. 
At that stage I hadn't had my first period yet so I had no idea if I was pregnant or not. After a few months it turned out I wasn't but I was still completely stressed out during that time. 
A couple weeks after that occurred he unblocked my Facebook and said he wanted to apologise to me in person. I was cautious but thought I'd be safe if it was outside my own house. Turns out I was wrong. He hugged me, then pushed me back into the fence and down onto my knees and told me to suck it. I began to out of sheer fear but eventually I found the guts to push him off. I ran inside and didn't say a word to my mum. 
Only this year- 2 years on- have I told my mum and she doesn't know what to do about it. I spoke to my psychologist and she thinks maybe I should report it. 
Is this even rape?
Will they assume I was 'asking for it'?
Should I have been more defensive? 
What should I do?