The mask ordeal in Bittersweet

Im making masks and have sold a couple. Im going super cheap on them because its hard enough having to wear them in so many stores… I had to go to costco ( only place with my stupid dog food) so i had to wear one. I got a few minutes in and nearly passed outl. Turns out i can breathe maybe 10 breaths before i cant breathe anymore and start to pass out. I was so weak and dizzy. I must have looked god awful because by the time the 3 checkers saw me at the chest stand they were all telling me again and again to take it off. I kept pulling it down to take deep breaths in the store because i couldent breathe.
Its like trying to breathe with a pillow stuffed over your face.
By the time i got to the car, it took a full waterbottle and me coughing so bad through the parking lot. I cant win. I cough like mad because i cant breathe. Cant breathe take off the mask, Get more nasty looks. I got home and found my inhailer and took a few puffs and i still feel like i have a hard rock in my chest.
This is litterally a me thing guys, Not a we. Im not infected ( i think we already had it) If i was sick, someone else in the house of 14 would also be sick. And no one is. So this is a me problem.
I now feel exhausted and my chest hurts. I still have to go to walmart. But at least i wont get nasty looks for not wearing a mask there.
I tried. Its hard.
Im so tired of this....