If condoms and other birth control is bad, can you use them for health measures?

I'm very new to learning about Catholicism and the biggest thing I'm struggling to understand is body autonomy. I've heard that the use of condoms as birth control is strictly forbidden. However, would you still not be allowed to use a condom if a partner has an STD, such as HIV or HSV, in order to protect both parties?

Also, are women allowed to take birth control for health issues? For example, many women find birth control helpful in treating endometriosis, PCOS, menstrual irregularities, hidradenitis suppurativa, etc. But are these uses of birth control allowed?

I don't mean to offend anyone, I would just lile to know more. Thanks!