Ladies do monthly visits really make you feel this crazy??....?

my girlfriend, she's cool and all. BUT when she's on her "monthly" trip, o geez she goes a bit ..well diffrent . last night we were up the whole night and she was having severe cramp pain and she was about to cry and then i made a HUGE mistake(i know now) i was joking with her telling her, if this happened again, im leaving her and find a girl who doesnt have em.. and THEN she lost it, telling me its not her fault and she wishes i cud have them for a day, then i will keep my mouth shut. and all. geez...was it REALLY my bad?? it was A FRICKEN JOKE!!!