Handling PMS symptoms?

Wanna talk about PMS symptoms since it's hitting hard right now. The week before my period, I get extremely down. I feel tired, I don't enjoy the things I normally do, I struggle to get up in the morning, I have constant self-degrading thoughts. My acne flares up both because of hormones and because I can't find the motivation to keep up my skin routine, and it's like I forget to take care of myself. The past few months I've also had lots of muscle pain- if I work out while pmsing, I'm sore for days afterwards, and it feels like my body isn't repairing itself. It makes me feel like I'm falling apart, both physically and mentally. I'm normally a very happy, optimistic person, so it scares and saddens me to have these feelings of apathy and worthlessness each month. I'm always back to normal once my period starts, but the week before is always a very dark time, and I don't know how to handle it. Any advice?