The spider you killed yesterday was NOT a brown recluse. They're very small spiders and the one that you killed yesterday was too big, by far.
On the other hand, you are having a reaction to whatever it was that bit you.
See if you can't identify the spider(s) you've found in your room by looking here:
http://www.uky.edu/Ag/CritterFiles/casefile/spiders/spiderfile.htm
Knowing what you've encountered, maybe you can figure out what to do about it... Good Luck!