I has a similar problem with click sounds coming from my bottom bracket last week.
Check out this website for sources and solutions:
http://www.jimlangley.net/wrench/keepitquiet.html
I found that my lock rings and pedals were a bit loose. It was as simple as lubing up the lock rings and tightening the heck out of them, and lubing and tightening up the pedals. No more clicks!!....I thought I had a toasted BB too since mine is pretty old. Been riding all week without issues.
I'd suggest making sure everything is lubed and tight before running out to buy a new BB.