high heart rate at 13 weeks

Cayla
Does or has anybody else had issues with sinus tachycardia early in their pregnancy? Every time I stand up my pulse shoots to 130-140 depending on if I'm walking or just standing. I am very hydrated and had pretty much every test done possible. They said everything is fine and they think it's just the way my body is with pregnancy. They put me on metoprolol which doesn't seem to be helping. I don't see the cardiologist for another week and am freaking out