AITA for snapping at my boyfriend because he refuses to buy me pads?

so this might sound kind of small or dumb but it’s been bothering me. my boyfriend is super sweet up to a point when i’m on my period. he’ll get me tea, snacks, painkillers, whatever. no problem. he acts like he’s trying to take care of me, which is why this feels so weird!!!! every time i ask him to grab me pads or tampons if he’s already going to the store, it’s an immediate no. not i forgot or i didn’t have time, just no. flat out refuses. i’ve asked him why and he gets awkward or says stuff like i don’t want to or it’s too embarrassing or even that’s not my job. i don’t get it. it’s not a weird thing to ask? we live together. he has no issue picking up toilet paper, body wash, literally anything else. they’re just hygiene products. it’s a box of pads. he’ll happily get every little comfort item for me except the actual thing I NEED MOST. i told him it actually makes me feel kinda awful. like when i’m in pain, cramping, bleeding through stuff, have no energy, and i literally can’t go out to get them myself and he’s already out it’s such a small, simple thing for him to do. and he still won’t. and when i tried to tell him that, he said i was being dramatic. and yeah maybe i was dramatic in that moment because i snapped and said sorry my bodily functions are too gross for you and that he seriously needs to get over it. i was in pain and honestly just tired of begging for basic help he told me i was making it a big deal and that i should plan ahead or ask someone else. it really sucks to feel like i can ask for anything except the one thing i actually need

so yeah. aita for thinking it’s kind of ridiculous. or i don’t know. aita for thinking it’s actually kind of a big deal that he won’t do this one really simple thing