Hi Gina. Don't be disheartened. I know many PMPs out there who walked the same path as you. They didn't give up but persevere and try again. The good thing is you will be given another 2 chances within a year to pass your PMP exams. Here is what I would recommend for your next steps:
1. Look at your schedule, take into consideration your work, social, family, vacation, etc., and how much time and effort you want to put into your 2nd attempt.
2. Draw up a study plan and stick to it.
3. Once you identified a good date to take the exam, go ahead and book it (note the changes in exam format).
4. Purchase the exam simulator (if you have not) and keep practicing the questions every day.
Questions on M&C can be very tricky because it can trick you into thinking it is a question relating to Executing or other process groups, so you can use the simulator to practice and understand where your knowledge gaps are in M&C. Also, in your previous post, you mentioned there were many procurement and change requests questions, you may want to start revising those areas and see where your knowledge gaps are as well. Also, don't neglect the other process groups while doing revision on M&C.
Good luck on your next attempt!
“It doesn’t matter how slow you go as long as you don’t stop.” ~ Confucius