I have afib and hypertension, and take spironolactone and omeprazole, and have noticed an increase in my chest measurements of late. should i worry?

Spironolactone: Spironolactone is known to cause breast tissue enlargement (gynecomastia) in males. Average prevalence is about 10%. There is another similar medication eplerenone without this effect. You can discuss this with your cardiologist and resolve this issue. You can read this ref for your knowledge. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2719518/. Good luck. Let me know how you feel.