What are you on, steemit? Should be in the top box on the left under "my friends" for your normal feed and "my communities" if you're in any groups/communities.
I had to actually open steemit for this xP
If it's steempeak there's a thing called "feeds" in the top menu and it's the first item (following) in the dropdown.
If it's something else I can't help XD
RE: I can no longer find my feed