Guys I really really need your help and advice with this ..!!?

Hi everybody I am 26 years old and I live in Australia.I am a dentist by profession but I am changing my profession (long story why) so I am studying full time to be a medical administrator.In the beginning only I want to tell you I am very pretty girl and used to be super confident and had lots of friends ,then I moved to Australia and I don't know why slowly I have lost all my confident.I couldn't even find a job because of this reason and being a foreigner too...dunno !!.I am all the time anxious about my life, future and parents(sometimes i think they are unreasonable to an extend).I am 26 being so highly qualified and having so many degrees(Medical administrator is my 3rd degree) still I am jobless!! I moved Australia for a better life from my conservative country and now because of being a foreigner here i have to struggle for everything.I feel so lonely ..I have no friends. I try talking to my batchmates but they ignore me like i don't even exist. i try talking to guys also but they ignore me too(at least guys neva ignored me before even those who are from my country!).I feel so lonely and bad.I always skip my cles and avoid having group discussions because I am the one who nobody wants to make group with.I used to be the most popular girl during my school and bachelor degree's time but now may be because of some bad luck or some other reason nobody like to talk to me.I have one more problem.I don't even have a bf.Wheneva some guy approaches me I dunno why I try to run away.Can you believe till now I haven't t made one single Bf?? and yeah m virgin too.It's just because I thot i will only do it with a guy who I actually love and I could neva love anybody and nobody could eve love me...I had few bad experiences with guys like guy in liked proposed by best friend or thy guy who i was going out just for a week asked to have with me and i declined so he ditched me very next day .Now I am 26 my all friends are married or getting married soon.And m sitting lonely like a freak and escaping from guys.Recently a guy asked me out and each and everyday I am making some excuse for not going out.I am not even attending his calls and not replying his msgs.Even though I like this guy but I think i hav totally lost my confident in talking to guys.OMG!!! he just txted me and asked where am I and why am not replying! I didn't even receive his calls.He is a doctor, good looking and super decent.But I am like what am gonna talk about?May be I wouldn't be able to express myself properly or do something stupid in front of him so he would feel like i am a freak or something.I am really confused about each and everything in life.I know I am spoiling my life but I can't help. I feel if I marry or make Bf then my freedom would be gone foreva!! Also I feel if I make Bf he would come to know abut so many problems in my life and he would come to kno what kinda loser I am .so I 'll make a Bf when I am financially stable or when I feel normal and confident.Do i need a psychiatrist help??What Should I do?Sometimes i feel i shd die!