So I work full time as a gardener at a botanical garden, meaning I work outside all day. So today this morning around 11:30, we were planting several plants and all of a sudden I get lightheaded and felt like fainting. I also drank coffee this morning which usually I don't(I drink coffee like once in 6 months) and everytime I drink coffee I get anxious. I also didn't drink anything in the morning. My mouth felt dry, my hands were shaking and heart was slightly pounding. Everytime I am standing I feel like I'm gonna faint but feel better when I sit. I also thought I was gonna throw up. So thinking that what I was experiencing was dehydration, I drank tons of water but did not feel better immediately. Then lunch time came and I sat for like 30 minutes and gradually started feeling better.
So could someone tell me if what I was experiencing dehydration or a panic attack(not full blown, but the stage right before it)? I do suffer from anxiety and take sertraline btw but I have been skipping does every other day(25mg) because I won't be able to get another until the end of the month.