Try not to stress about it. I know this is hard, it took me a while to realize that this is something that is going to happen from time to time. As long as you are givning the proper care your snake will eat when he is ready too. Mine only goes off food for a few weeks here and there but I know some people whos's snakes sometimes go 2 months without eatting and I have know a couple breeders who have had BP go as many as 4 months with no food with no ill effects. Granted the latter where adult snakes. If the snake is young they can still go for a good period with no problem. When my BP was about 7 months old she didn't eat for about 6 weeks but only lost a few grams of weight and was still acting normal. I was super stressed back then but one week she just started eatting again. Since I have learned to calm my worries. As long as it isn't drastically lossing weight or becoming extremly lathargic, you shouldn't have any worries IMHO.