Hi. I Jumped Off A 25ft Cliff 4 Days Ago

Hi.
I jumped off a 25ft cliff 4 days ago and landed badly in the water. I have large bruises on the back of my thighs which are dark purple in colour and also some neck pain. I have not seen a doctor as the neck pain is improving although I have taken muscle relaxants and ibuprofen. I am taking a 9 hour flight in 2 days. Should this be okay or should I take precautions?

Thanks,

Soma