it's okay, it happens! the important thing is to get back on the horse! and do some damage control!
losing weight takes time.
and you've already lost 38lbs! that's really great!! i'm sure you havent done a week of a damage. it doesnt sound like that much anyways.
think of it as spiking your calories. so your body revs up its metabolism
and then get back into the saddle again!
good luck!