Don't worry just keep taking practice exams and study your weak areas.

How do you get access to mock on PMI.Org?

Boost your confiedence level first. Cheer yourself..

1st time -  you scored 48% ...  (it highlited your areas of weakness - read the explaination why answers you selected were wrong)

2nd time - you will score 65%-75% or could be better.... (this will highlight your areas of improvement - go with the explainations again)

3rd time - i am sure you will mark around or above 86% .....(this will give you enough cofiedence - dont worry about getting 100%  - you have mastered most of the areas of improvement required)

 Note -

Try to understand the question first, what it is relating to, look into the options, eliminate the one you think are incorrect, judge with the remaining options, the left option is the answer....

Don't cram the question and answer, experience shows understanding of the subject...

Make a habit of reading explaination for each question you answered wrong. This will help you a lot.

Don't hurry for writing the exam. Evaluate youself first -  PLAN - DO - ACT - PERFORM

Finally, RITA's questions are more realistic from the exam perspective. It's good idea to practice as many mock questions as possible. It will prepare you well..... Think you have got a better percentage from rest of the  26% who struggle a lot initially......

 Hope this helps.....Cheers!!