The book, called "The Pause" helped me greatly. But even a woman doctor I met told me that sometimes her legs feel like stumps (meaning swelling) and she takes a water pill, so do see your doctor and ask if this would help. I have an online chart and can talk to my doctor at my clinic. It's a good thing.
It might be pre-menopause or you might be retaining water, look up your symptoms in google sweetie it might help you with the answer you're looking for! Depends on your periods as well but you're still young unless you're like I am partial hysterectomy no uterus or cervix plus I'd depends on how old you were when you started your period.