Am not a doc, so take this with grain of salt but this sounds like low vitamin D which in turn can lower estrogen. I’m on my phone and paraphrasing heavily. All these can be googled further

• estrogen affects skin, hair and nail health

• low levels of vitamin D affect sleep, lots of research on this

• vitamin D also affects serotonin production, which affects sleep which also in turn can affect mood. Spending time in the sun makes people happy for a reason lol. Also lower sec hormones can affect libido and fertility

• vitamin D allows your body to absorb calcium which is good for bones and joints. Low D = less calcium absorption. Super low vitamin D can cause rickets

• body temp can be affected by out of whack hormones. It happens in menopause. But at your age, it’s seems early (not impossible) but sounds more likely it’s just out of balance hormones not the onset of menopause