I don't know where you are so can't offer specific advice but do check online about services/support groups local to you. You could approach your GP surgery and see if they offer any assistance. You need to be talking - either to people in a similar situation or to professionals. You're not alone, although it may feel like it, but you need to initiate interaction with others outside your current family/friendship circle. 

Nothing changes of its own accord, you need to make changes in your daily life - perhaps find, start or resume an interest that gets you outside. A walk every day might be a good way to start.

Wishing you well.

Helen