Insensitive teacher wants a doctor's note to prove I have anxiety attacks?

I tried to tell my teacher the day after I had a panic attack starting in her cl (I was sick already, so I asked to go to the nurse and the teacher yelled at me to go sit down, then after 45 minutes I have my head between my knees and I'm sweating, panting, teacher finally sends someone to lead me to the office and I break down in there) that I have panic attacks and that sometimes I HAVE to go to the nurse because of it or I just need to step out for a minute. So the teacher cuts me off right after I say barely "So um, I never told you and I should have sorry but I have anxiety attacks"..... and demands a doctor's note. I'm on the verge of tears, I bolt out of cl without another word so I don't have an attack right there and end up unconscious with a concussion before that teacher even considers my attacks real. I never went into the hospital for my attacks or anything, I always dealt with them privately and with my therapist. Would a therapist's note count? Or/and my mom's? It was hard enough telling a few of my other teachers; the first signs I get are tears, breathing, then its tunnel vision, shaking, paleness, loss of speech (I'll mumble/stutter/start trying to speak but can't) maybe puking, pain, severe trembling and weakness and then I'm OUT. It happens fast sometimes, others more often it starts with me trying so hard not to cry and hyperventilating and I'm a time bomb the next minutes; if anything sets me off further I'll go through and perhaps end up fainting. The teacher is real loud, snappy, and plainly this teacher is rude. What would the best thing be? Go get my therapist's note + my mom's or just get my mom to talk to the teacher....? I could try talking again myself but most likely I'll tear up again.... just cry and sob anyway and not care? I didn't think the teacher would think I was trying to fake anything to get out of cl, I was one of the best by doing my homework and only yesterday has everything slid downhill because of my misinterpretation of instructions (I got my period just this hour, it's hell whenever the menstrual comes around every 7-10 weeks and it's always heavy for just every symptom)