So POTS with the flu is fucking terrifying

I am in the tail end of a flu, but on Monday I had a 101.7 fever and a repressed fever the next night (fever reducer). I have been having issues with dizziness and fainting all week but Tuesday genuinely made me wonder if I was going to die. my heart was racing but light, I was struggling to stay conscious even laying down in bed with my legs up. I was so exhausted but I felt like if I fell asleep I was going to die. I was too semi-conscious to wake my girlfriend and communicate that the ambulance probably should be called. I just fought and fought it until around 3am the three salt pills and Pedialyte I chugged kicked in and I suddenly felt much better. Wednesday I felt this start to come on again and I had in total 6 salt pills, chugged electrolytes solution, chugged a lot of water, and fast ordered compression socks. I ended up fine and feel only mildly more pots-y today. my question is genuinely, what the fuck do I do if this happens again. I couldn't communicate was terrified that I would die.