Just as there are many animals in shelters waiting for an owner, there are many children in orphanages waiting for parents. My own personal opinion would be to look into adoption.

It's your decision though and no one can make that for you, but don't beat yourself up over it or make yourself so stressed out. Sit down by yourself, calm yourself, and make a list of all your options, list the pros and cons of each one. I'd think that either at the end of your list you'll either see one way as being better than another, or you'll feel more secure about whichever option you choose.