My advice is... breeeeeathe. Stalls are normal and actually necessary. If your body never took a little break from the rapid loss, you would probably be really sick. It may be normal to lose this much with wls, but it's not normal at all for our bodies to lose this fast. Your body thinks it's in full-on starvation/dying mode. Keep getting in your protein/water/vitamins, exercise regularly, and the weight will come off. You just have to let your body do it at its own pace now. We put ourselves through an enormous trauma with the surgery, so having a little rest every now and then is only good for your health.
That being said, I wasted SO much time worrying about stalls. I would often spend like 3 weeks a month losing absolutely nothing, then rapidly drop pounds in a week. Even with all of those stalls every month, I'm still down 172 pounds since surgery less than a year ago. It adds up, and in a year you'll realize that it was silly to worry so much about this. Not to mention stress and worry are generally terrible for your health, and improving your health is the whole reason we're here, right? You'll get there! Hang in there!