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I am shocked that till now you have not gone for checkup to your nearest orthopedics. You have not mentioned your age too. Well my first advise to you is to rush to the nearest orthopedic doctor, get your x-ray done for confirmation of fracture. If the pain is very sharp and unbearable then there will be the possibility of some rib bone fracture
. Although rib bone fracture don't need any surgical management but if fracture is there then the bone should be immobilized by tapping and strapping. All it depends upon the site and level of fracture if it is. If there is no fracture then do some hot fomentation on the affected side, take some muscle relaxants and go for rest.
Avoid such wild games in future and ask your boyfriend to deal with girls like a girl !