It is not unusual to feel like this after having been by yourself for a while, it is like everyone is invading your personal space. Recognise that these feelings are within yourself and yours to control. Be wary of isolating yourself, that is a trap depression can catch you in, so I would try to make the effort of going and doing something that you used to enjoy with friends. If you really don't want to do what everyone else is doing then maybe you can suggest something that you would rather do. *hugs*