If you are overweight then Gynecomastia is not common and generally mis-interpretated due to fat.
But If you have strong feelings or very enlarged chest then you should meet a Endocrinologist (doctor who treats diseases related to hormonal imbalance, degree should be- DM, Endocrinologist)
He/she will order hormonal profile blood test for excess of female hormone in body.
Some of the reasons behind gynecomastia are- 1) taking medicines which cause gynecomastia. (for example- Finasteride, list is very long)
2) hormonal imbalance due to different reasons.
Etc.
But If you have strong feelings or very enlarged chest then you should meet a Endocrinologist (doctor who treats diseases related to hormonal imbalance, degree should be- DM, Endocrinologist)
He/she will order hormonal profile blood test for excess of female hormone in body.
Next Steps
If overweight then work on weight reduction.
Health Tips
If taking any medicine then ask about it's side effects