ANY bleeding like this should be investigated immediately, I'm sorry to say.. Don't want to panic you, but you really should have him get it checked out asap. I don't know about clots, but I know bright red blood usually means the bleeding is somewhere in the intestines; dark red, almost black, blood (like coffee grinds) indicates possible bleeding in the stomach (internal bleeding) that can be very serious.
He has already waited a while so I can see why he wouldn't think it was urgent, but it really may need immediate attention. I feel bad for you; if it were my husband I would 1) be pretty nervous about the whole thing and 2) want to kill him for not going!
Good luck with this, I hope it turns out to be something simple.
Don't wait to seek medical attention. Seek out a good island doctor. Better safe now, then sorry later. Best of luck.