You could have a food allergy related to nuts, or anything contained in that brand of peanut butter. I would talk to your doctor and see if you can get a referral to an allergist, or if he has other ideas about why it could be happening.
The tightness in your chest is not likely from hormones. It could be from acid reflux or even a sprained chest muscle.
Antihistamines may be prescribed to reduce tightness in the chest.
Kidney infections should not cause tightness in the chest and shortness of breath. The kidneys are more likely to effect your back. Definitely check with your doctor to make sure nothing more serious is going on.
Yes, chest tightness can be due to hyperventilation. More specifically is it due to Hyperventilation Syndrome which is a respiratory disorder caused by the psyche.
Anxiety
It can cause asthma, cancer, stroke, lung problems, or chest tightness. For more info go to greenpeace.org or familydoctor.org
when having high cholesteral do you have chest pressure and tightness
If a person is feeling tightness in her chest and having cramps she should go to the hospital. Your friend could be having a heart attack.
coughing and coughing up blood, wheezing, chest pains or tightness of the chest and shortness of breath
Some of the most common angina symptoms are chest pain, and a tightness, squeezing, or pressure feeling across the chest.
...be careful, it can start of pneumonia, chest infection, Amoxilin worked for me good.
Anxiety can cause this.Also certain medications.