This is my first post on this site, and I was hoping I could get some advice/feedback. Could GERD cause shortness of breath and some dizziness, accompanied with a feeling of fullness/pressure high in my abdomen (for the mom's out there, it's similar to the sensation after eating while being 9 months pregnant, with the exception of the dizziness). It literally just started yesterday, at the beach w/my family. I thought I might have been overcome by the heat while unpacking the beach bags/laying out towels, etc (yes a lot of bending). Or that I was having an allergy/asthma attack. But it lasted about 2 hours. My m-i-l said it sounds like gerd. But I felt better after relaxing in the ac, so thought nothing of it. Then it's happening again today at home in the ac, after doing the laundry (again bending over). I definitely did not overeat on either occasion (in fact, I feel too full to eat). Also, not sure if it's relevant, have hypothyroidism and take synthroid daily, along with advair for reactive airway issues. On both days I was close going to ER, thinking I had a heart issue, but thinking I'm too young for that (36). Any advice/feedback would be greatly appreciated!