Sometimes i feel like my heart will explode in my chest could this be from stress? does that mean my blood pressure is to high?

Not necessarily: It does, however, indicate need for a visit to your primary care doctor. "stress" can indeed create symptoms like chest pressure and even pain, rapid, pounding heartbeat, dizziness, nausea, feelings of choking, shallow breathing, etc. These are all physical symptoms of anxiety, which don't have to be accompanied by the emotion of anxiety. The differential diagnosis is long, so please see dr.