Wellness for Life Blog | How Do I Know If I Have Gynecomastia answers your concerns in easy words. If you feel a soft lump or notice swelling under your chest, it might be gynecomastia. Some people also feel tenderness in that area. The best way to be sure is to check with a doctor who can help you understand your condition clearly. https://www.claimajob.com/profiles/6863455-wellness-for-life-blog-how-do-i-know-if-i-have-gynecomastia