You are totally reasonable. its nothing to hide
2 different examples
2 days after I started going out with my partner he invited me to his, should add he lives with his parents, as we were so new I was reluctant to meet, no problem, they had a mobile home which was very comfortable so we went to it and settled in for a lovely meal he cooked in its kitchen, were snuggled up on the sofa watching tv when I started getting pain around left ovary area,
I tried to ignore it but got worse and worse, by around 2am I was lying on the ground in the bathroom throwing up and thinking the evening we had planned had gone very wrong, he was worried about me and I remember he lay down beside me and asked gently could this be my period coming or was it something else? He even thought he gave me food poisoning or something
He offered to go into the main house and get me pads if I needed. He explained he didn't know if this was a period as he hadn't seen a female in this much pain but he knew they hurt a lot. By 3.30am I was literally unable to move with the pain, no bleeding and still throwing up. I gave him a lot of kudos for understanding and I was trying to brave it out.
He went into the main house at 3.30am and woke his mother up (we hadn't met at this stage) and they got me into the main house where I passed out briefly with the pain on the sofa. While I was on the sofa his mum rang out of hours GP who gave an appt for 45 mins later, they bundled me into the car, called at my house and they packed me a bag just in case on the way thru town and into out of hours.
He came with me into to see the Dr who suspected an ovarian cyst and so I was sent to the main hospital and to gynae, where when I was waiting to see the dr the cyst burst, he was terrified that he had hurt me in some way.
I really appreciated that as a male he knew where the towels or tampons were (he was the only male child) and was prepared to raid the stash if I needed, no embarrassment and when knew needed more help than he could give at that time sought it out when I wasnt in a good frame of mind.
It's unreasonable that your friend was hiding your sanitary stuff, horrified that it was that her little girls might literally see it,
I went to a holiday camp for a week when I was 11, first time away from home, I knew nobody and we were grouped by age and I was in a group with 15 boys and I was shy, that week I found my voice.
On my 3rd morning, I woke up with some blood in my knickers, I was mega upset as I had no idea what was happening, I didn't know that periods existed, my mum had never explained anything and when I was born (apparently the hospital phoned and told her she had a baby) yeah right, (lets not mention pre-eclampsia and both of us nearly dying) it took a young student working to explain to me in broken English that it meant I wasnt having a baby. Big shock as wasnt ready for one at 11 anyhow.
Long story short, if things had been more open and honest and not hidden away, I would have known roughly what was happening and what I needed to do (use a pad for starters) and would have been more like my OH (11 years on) who tried to understand that this could be period pain or something else and when needed got help and introduced me to his mum at 3.30am as he can't drive due to a medical condition and I definitely wasnt fit to drive and we live in the middle of nowhere.