I have flea bites :(

Last night I went to someones house, and they had a dog. I am a huge animal lover, and so I of course pet the dog, and walked around their house barefooted. Well I woke up today with lots of flea bites, and found a couple of fleas on me :( I am just so itchy. I sprayed my room with bug spray, and washed my clothes. How long does it take for flea bites to go away?