Why is the concept of women not feeling themselves when there on so hard to grasp?

I literally hate my period, I’ve always had really bad ones. When I learned about contraception and it’s affect on periods I jumped at the chance to have it to stop this week long suffering. I’ve been on contraception for 8 years. I’ve recently come off it and just got my first real period. I hate it, I feel off, I feel dirty. I have woke up this morning in a pool of it and didn’t move for ages because I had 0 energy. I’ve got up and sat in the bottom of my shower for 45 minutes before I could muster up enough energy to even get washed. Even now after a shower I still feel dirty. My partner is the most caring person ever but he doesn’t understand that I’m not my normal self on my period. I don’t want to text or talk, I definitely don’t want to have sex, no matter how much we both want a baby. I literally want to lie in bed in joggers and a hoodie with chocolate. I don’t want to get up and do things. My dad (who unfortunately I still live with) doesn’t understand that I don’t want to tidy my room, I don’t want to do housework, I don’t want to do anything. After years of normalising periods you’d think men would be more clued up to the fact we’re all different and not every woman on her period feels fresh and happy.