"I have been feeding the hives could this cause to much brood to be produced causing them to swarm?"
Yup, that could cause it. I checked on my hive today, and didn't find any queen cells, but I put on another deep and interspaced new frames with full ones. This is one of my two queen units, and was a bit ugly today, can't blame them after 3" of rain in the last 48 hours.