waking up to heart palpitations and stomach growling

I (26F) have recently been waking up to instant notions of my stomach growling like crazy and heart palpitations. It’s only been a couple of mornings so far waking up like this but I’m wondering if this is normal? My heart rate takes a very long time to return to normal. A few nights prior I did get an anxiety episode and by the end of the night I was okay. The next morning it felt like the anxiety just carried over and the heart palpitations did not go away until my friend arrived in the late evening. It lasted about 12 hours (Anxiety induced for sure.) The strange thing is— the second morning I woke up feeling okay but the same thing was happening anyways. Same stomach grumbles and heartbeat coming out of my chest but it took a few minutes for this to happen. Could anxiety attacks last this long?

I have been recently diagnosed with GERD about a month now and I’ve noticed my appetite has been less than usual even though I always feel hungry. I haven’t been active at all for those two days— I just stayed home doing very little other than trying to calm down my heart rate. I was also alone most of the duration.

I’ve tried everything I could think of to cope. Reading, making art, meditating, breathing exercises etc.

I got out today and made sure I was physically active and with people all day. I even kept notes of how I felt and what I ate. I think I ate exceptionally well today compared to the other days. I just hope it doesn’t happen again when I wake up.