Hi, Whilst I Was At The Gym Yesterday My Right

Hi, whilst I was at the gym yesterday my right calf muscle cramped causing me to fall over, the way I landed must have been in a funny position as it has really injured my ankle, its bruised and swollen but I can walk on it but it only hurts if i twist it slightly by accident or it can become uncomfortable sat down. Also, my calf muscle still has a cramping feeling when i walk. Do I need to see a Doctor or leave it to see if it improves on its own?