u/Bo_Washington

I'm 34 male, she's 28 female. She's only been diagnosed with PMDD for a couple of weeks. She suggested a day out yesterday, I said that's great, when I asked if she still wanted to do it today she was angry that I woke up late (we hadn't arranged a time and the place stays open late so we had plenty of time.)
Then she says she's sick of doing the same things over and over but she couldn't think of any new local places to go and now it's too late now because I got up late and my disability means I can't drive for more than 2 hours. She went upstairs and I spent ages on my phone panicking looking for somewhere we could go, I suggested two places I found nearby but she ignored me. She was pretty fuming by this point and went back upstairs and spent the whole day in her bedroom while I went to bed to calm down from my pending panic attack. She later sent me a text apologising for being so negative and it's just her PMDD and I broke down in tears at the relief.
Today she overheard me telling my mum on the phone how much I struggled yesterday with her anger, I said I don't know why she's angry but neither does she because of the PMDD and she said as such. Then we had a big blow up because she doesn't want me discussing our relationship with my mum because it's not normal and I'm immature and weak for not being able to handle her PMDD and I need to get counselling for my anxiety.
This has been going on for years where she'll blow up at me for something but won't be able to explain why she's angry and I don't know either, I just keep begging for forgiveness and trying to explain myself but she won't have it.
She's packed her things and left now and I don't know how to deal with the situation if she returns or wants me to fix myself. I will and have supported her through any PMDD or mental health issues but I don't know if I can do this anymore