Getting pressure about engagement with girlfriend of 5 years. wat do i do?? im getting frustrated and put off!?

I have been with my gfriend of 6 years now and obviously after such a long time engagement is on the cards however the only problem now is my situation. I have currently been in the middle east for teh past year with a company i thought i would prosper in only kleading to being lai off and am now here looking for other jobs now that the UK is in turmoil with the emloyment sector however am finding difficulty finding something suitable here and back home where my gfriend currently resides. Now i do miss her sorly and she misses me but keeps telling me to come back only leaing to greater frustration as i do not want to be in the same situation i was in earlier last year where i spent a year looking for a job while she went to work coming back late and leading to my clincial depression to kick in causing anger and frustration between us me blaming her for her workahoic attitude and her telling me i was a moody 'b****rd'. I am now getting engagement pressure from her and she wants security of me as to when this is going to happen and with my current position with no job, not knowing which country im ging to end up and no support from my parents on this issue i just cant go through with this now. I sometimes think from how we are on a usual basis where she finds e annoying and blames me for everything that goes wrong in her house or my house and her working attitude of sleeping early and not being able to travel anywhere outside London as she constantly feels sick im not sure how good a partner she would be to live with. I do love her but she has very high expectations at most times and creates this worthless being wihin me which i dont know how i can handle on a day to day basis. Another factor i sthe intimacy which i do not feel much from her end anymore when we are together such as before... please help i think about it everyday and feel guilty about not acting upon it everyday. I sometimes think when i see other girls that i can get someone better than her who is more fun and know others but upon talking and chatting to them do not feel as close...