Skin needs to stretch before gains happen. If before your break you gained skin expansion it will be permanent. If the gains you have made in tissue were not cemented yet then you will notice the extra skin but have no worries, any temporary gains lost during a break will return almost immediately. Now that you are back to work go hard and make those gains and the skin will quickly fill. But keep in mind, as you continue to gain this issue may happen a few more times before you final goal is met. It is all a process so remain consistent and patient!