Hi, Im A 39 Yr.old Female, Ive Been Having Week

Hi, im a 39 yr.old female, ive been having week legs after walking only a few steps, head rushes when I stand up sometimes so bad I grab a wall. Ive always been healthy, for the most part. I'm scared. 2 years ago I passed out and the.dr said I had a heart problem and pancreatitis. I wasn't able to get treatment at the time because of a bad marriage I just got out of the marriage and I'm still feeling sick please