2 weeks ago had laproscopic surgery to correct a prolapsed bladder. Today there is blood in my cather bag and 1/4" blood pieces, sharp pain in bladder?

Not uncommon . Surgery on/near bladder can cause internal trauma that can cause bleeding:clots. And is also cause intense pain from spams. Need to call ur surgeon to discuss. If the procedure was complex, this could b a complication. Call ur surgeon.