PMS mental block during training

Just looking for advice and/or support. Training for my first (official) half in September and hoping to keep training for a full next year. Without going too much into details, I don’t get my cycle every month (not for any health reason, I just skip it with BC). Well, I’m on it now, and I swear I’m having the hardest week in terms of training. My periods have always been rough, hence why I skip them, but I’m really disappointed in myself for how difficult mentally it is to make myself get up and lift and keep running. I’ve been a competitive athlete my whole life (F23 115lb) and I’m just really bummed with how this week has gone. I usually keep my weekly volume around 20-25 miles, but I’ve only run 3 miles yet and it’s Thursday. Feeling crappy :/ Anyone get like this?