We just broke it off, I don't know what I feel right now?

My boyfriend of 7 months just broke up with me and he told me the reasons were because I am very difficult to communicate with and also that I’m not very appreciative of things. It’s just something that I don’t quite understand, although one thing that he mentioned was that I have difficulties apologizing, ofcourse I don’t deny it because I know for a fact myself that I do have that problem and it is something that I’m trying to change because I do not want it to affect my relationships with people around me.

We’ve just been quarreling all day today and I’m suffering from massive headaches, I also am thinking that maybe I am becoming/already depressed and it’s scaring me, also as this is my first relationship it’s killing me, my hurt feels like it’s been ripped out and stomped on. There’s a mixture of feelings going on, he’s already deleted me off of Facebook and it’s just weird. I have no idea what to do… I feel I should woman up and call him but what if he doesn’t answer me and I have no idea what to say to him.

Please help me.