I've battled with heart fears for years. A combination of Lexapro and a beta blocker, with exercise and some significant weight loss last year (30lbs), had everything under control. Now I'm 12 weeks pregnant and can't take my meds. My blood pressure is borderline high at the doctor so I'm checking daily at home and it's okay here, but my resting heart rate has gone through the roof. Now, the past few days, I'm feeling lots of tension across my chest and upper back when I'm exercising, really tight muscles. That with my racing heart is freaking me out. I can even hear my heartbeat in my ears. Could something be wrong? My OB wants me to see my cardiologist since I haven't had a checkup since getting pregnant but my cardiologist can't see me for almost two full months. I'm panicking and don't know how to handle this for 6 more months.