husband’s stroke and feeling overwhelmed; forgotten

Since my husband had a stroke 2 years ago, I’ve been his primary caregiver. In a funny way, we almost have a better relationship now than before. But I’ve put on weight, I don’t get out and do things I used to do – like even go to lunch with girlfriends, I don’t care what I look like anymore, I don’t paint which I used to enjoy. And my grown kids, who I’ve always been there for – don’t visit, don’t check in to see how I’m doing or if I could use some help. I feel like I might be depressed and would love to feel better about myself. I know a lot of this comes from my thoughts – but the circumstances are pretty all consuming too. How would you suggest I work on getting my head above water?