Hi Andrew, jus saw ur lost, yeah ur are it could be some soft tissue injury, bone bruise does not make much sense, as u saying pain worsen with walking, that typical means u require proper bed rest for some tym, may be a week or two. Get Your self examined once by a sports fellow to rule put any significant injury, else you might be in some tough situation some day.
Next Steps
till the tym, take some anti inflammatory and rest to ypur limb
Health Tips
iceing is gud option but if more painful you can go for intra venous pain killers from expert.