I don´t feel anything for other people

Hi there! I need to ask you a question. I feel like I don´t care for other people. It would be wrong to assume that I NEVER feel anything; I do, mostly for my family. But I cannot measure how strong that feeling is. I guess I love them, but mostly on a cerebral level, or because I have been used to them for such a long time. However, what I feel for my family is still more than what I feel for others. It frightens me but I never feel anything for other people, even if I try really hard to make myself. I feel oddly disconected from everybody. I am a 30 year-old female; quite pretty, but normally pretty, not super attractive. I have never had a lasting relationship with anyone. Partly because I feel that they would laugh at me for not having any experience, and partly because my emotional maturing is really slow. I feel like a person in their early 20s, not older. My intellectual maturity is, however, better than that of my average peers. I know it souds narcissistic but it is not like that. I can clearly see all of my faults. One of the reasons I have never had sex is also the fact that whenever I was with a man, I could not emotionally attach to him, even if I tried, and even if I felt I was sexually attracted to him. I even underwent a long-lasting sexuality screening, but I came out as a heterosexual (not that I doubted it, I just wanted to know WHERE is my problem). I was diagnosed with Asperger´s and OCD just last year, but now I feel it could be some personality disorder. Avoidant PD seems to be matching perfectly, but I also sport some sociopathic (no empathy) and probably borderline (capricious mood) features. I read that reduced empathy is part of Asperger´s, but when I talked to a shrink, he said that he thought Aspies actually DO have empathy, but they just cannot EXPRESS it in a proper way. But I feel like I have no empathy at all. I really could NOT care less about people (even though I care a lot about animals); my sister gave a birth to her little daughter just three days ago and when I came to visit her in the hospital wing, I did not feel a shit. Everybody else was emotional about it, but I was not moved at all. I really did not feel anything. I feel like I would love to have a relationship with a man, but then... am I even capable of loving somebody? I mean, when i love somebody, it´s merely an obsession, but I don´t know if I can feel REAL love. I really WANT to feel so much, which makes me so extremely sad, but I cannot! Even doctors dunno what to make out of it. They say do not care about finding out what is whrong with you, focus on positive things! But HOW? I mean, I am not depressed, but extremely dissapointed in myself. Is there a way I could GROW empathy or emotions? Because I really dunno if I have them. I mean, when something really bad happens to MY people, then only I feel sad for them, but it never lasts for long. Maybe I could have Alexythymia (which is a condition which prevents you from RECOGNIZING your own emotions, but you most certainly DO have them). What shall I do? Do not say: "Go visit a doctor," they never help me. Thank you.