Suggest Remedy For Weakness In The Muscles

Hi, i'm a 20 year old woman and my muscles over the last day or so have felt very weird and has got worse. I guess they feel weak but is hard to put a label on it. It's in my legs and arms, effecting my fingures and feet the most. If i stay still my musces start to feel if they're relaxed too much if that makes any sense. Can't think of anything that i've done physically to cause it. Also, i have alopecia areata and am on the pill if thats necessary information. thank you