You are ill. Your body is out of whack. Of course you need comfort right now. Don't feel bad for what you are going through and how you are getting comfort...just remember moderation. And also make sure during this time you do other things that comfort you wether it is reading, sewing, etc. Your body while ill does need to rest and recover so use this time as that and when you do get back on track which I'm sure will be shortly you'll be stronger and losing better than before. Your mind is letting you know you need to rest and pamper yourself...so...pamper yourself with massages, pedicures, manicures...whatever but no processed junk food!!
You're are not going to fall off track because you want to get back on so badly and you will. Don't worry and stress yourself further.