I get heart palpitations very infrequently. When it keeps me from napping I take 1/2 dose of Hawthorne Berry and it relieves it. I find too much of caffeine usually brings it on.

Yes, Costochondritis can cause this, however don't put everything, especially chest pain and palpitations down to fibro.

Yes! I developed PVCs in June of last year and had a 2 week heart rhythm recording and they were confirmed to be premature ventricular contractions. Never had any heart problems ever in the past. No source found on workup. My cardiologist said this is often the case and they are common to just start up around perimenopause. Mine are mild and I take metoprolol ER 12.5 or 25 mg which controls them well. Not sure if any relation to fibro. Message me directly if you have more questions :)