Anyone ever have a small lump in stomach?

As I just bent over I felt a pain on left side of my stomach. I felt the area and upon pushing my skin in a bit, felt a small lump inside my stomach. I Googled it and it said in most cases its a hernia from picking up something heavy. I did lift my heavy box spring a day ago, so Im wondering if it may be that. It said online to call doc if pain worsens or it gets bigger. I guess sometimes it can ease on its own. The pain is there mostly if I bend over. Anyone ever have this???