Thank you for the translation! I feel for Tasashi, here. Even when you get older and you know that no one cares if you're buying tampons/pads/condoms/whatever, the lurking self-consciousness can still be there if you were raised to be embarrassed or ashamed of such things. The fact that he is acknowledging his embarrassment but choosing to still have a responsible sex life is really big character growth!
Kudos to the author and great job, Tadashi.