A secret makes a woman woman

There are so many uncertainties... what should I do and what can I do???  I feel so panic now!!!

I don’t know if I can go to the U.K and become a Postgraduate student this January successfully?  I'm not sure that if the University of Northumbria receives my acceptance letter?  I even don't know if I did every process of applying the accommodation correctly?  Even now I haven't applied the U.K. Visa.  

About the Visa, I'm so worry about it.  If I can get it successfully?  I'm worry that because I lost my graduation certificate and I only get copy one..  Otherwise, about the IELTLS score, I only get 5.5 for overall.  It is really not high enough... 

Besides, the Unconditional Offer, even though it is an UNCONDITION offer why does it mention that "Please forward any examination results to Northumbria University at the above address as soon as you receive them."  Any examination???  What kind of examination?  IELTS?  If I send the IELTS will the uncon offer be withdraw because of low score of IELTS? 

Father in Heaven, please show me a way and please lead me...!