I'm Having Pain In My Chest Along With Light Headed

I'm having pain in my chest along with light headed and feeling sick to my stomach. Comes and goes but coming more frequent every day. The pain is in the middle of my chest, nothing seems to bring it on or make it go away. Went to dr. this morning and BP was 165/94, did an EKG and took blood. Dr. thinks might be gall bladder. What are symptoms of gall bladder?