I'm pretty sure I have mono, and my birthday is in two weeks, will it be gone by then?

Go to a doctor and they'll give you medicine that will reduce the amount it tires you out and stuff. No it most likely won't be gone in two weeks unless you've already had it for a while, but the effects eventually wear off. I was out of school for a week and felt like crap for maybe 2 weeks and after that was back to normal, just more tired than usual. You'll be more tired than you used to be for months and it doesn't ever fully go away. It stays in your system. But if you've had it for long enough then you should be able to still go out for your birthday. Just go to the doctor so you know when you stop being contagious and stuff.