with out being there it is hard to tell. Normally a queenless hive will be noticeably meaner than normal. other than a few signs, such as acting meaner than usual or roaring, the hive will continue as normal as far as collecting honey and pollen.
Was there any thing in the queen cell? some hives will make one just in case. If it was full it will normally take a few days for her body to harden and take her mating flight. then a day or so to put on her fuzzy slippers and get to work. As long as there is brood I wouldn't worry yet. best advice would be to seek a local mentor from a bee club to help you look though.
Please define roaring? Like a Lion?
or just very loud buzzing