Can't focus after break-up?

Long story short, I was supposed to take an incredibly important exam 8 months ago. I ended up postponing it because one month prior, my girlfriend-at-the-time and I (4 year relationship) broke up, and I couldn't focus.
3 months later I started dating another girl. Like magic, I was able to focus 100% on my studies and was finally happy again. Well, last week she ended things. I'm scheduled to take the test in a few weeks, can't focus, and my practice scores have gone down. Can't postpone again either.
Any advice would be appreciated!
Can't focus after break-up?
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