It could be a lot of things... definitely need to go to a doctor  for xrays asap... And, I hope all is ok and youre able to get back in the water soon - perhaps just hang on till late August when the storms come so it'll be working outside and can avoid beachbreak! I had a similar fall years back, nothing serious thank God, but ever since I avoid surfing 2' crap breaking is knee deep -  if I'm gonna take that risk gonna be over a reef in South Pacific...

get up early and go surf - it'll make that hangover go away and/or make the workday more tolerable :)