Marle,
I'm sure it is stress related. I had the same thing when things w/ my daughter first started then again when they were really bad. Rushed to the ER, had EVERY sign of a heart attack. EKG was perfectly normal, stress! Glad it wasn't my physical heart, but my mom's heart was broken.
I pray for you every day, daughter too! I wish I could take away your pain. As hard as it is, you have to take care of you. I finally got the whole Let go thing when I first came on SR in April. First time I had any real peace in 3 years. God and the folks here got me through.
blessings,
susan