I went to the hive today, overcast, lower 70's, and there was a cluster of bees below the bottom board. I smoked the upper brood box, I only have two no supers yet. I set the upper box aside and started to go through the lower box. I forgot to smoke the lower box, not smart. In going through the lower box frames I noticed very dark brood chambers and several, what looks like to be supercedure cells. When I got about 6 frames through the box they got real mad. I was stung about 6 times, the first ever through the pants. I quickly replaced the upper box and covers and high tailed it. I think the cluster outside was a swarm, but I do not have an available box to place them in. I did not see a queen but I only went through 6 of 20 frames. The upper box appeared to have about 3 frames available. Last time I went to the hive about a week ago I placed some sticks under the cover for an upper entrance. Any hints?