I'm 10w, but last week (at 9) I completely lost my shit with DP. Think of raging, wild, Mrs Rochester type losing the plot type shit and you'd probably need to multiply it by ten to get close.
To be fair, DP was being a dick and refusing to wake up after the fourth time DSS had woken choking on his own spit (he had a vicious cold) and telling me to "RELAX" - and in his defence, DSS is nearly 7 so isn't a baby, but can be incredibly lazy at clearing his throat that results in physically throwing up.
Either way, I lost it. I demanded he came downstairs (so DSS couldn't hear) and I told him to get out of the house
- My poor DP was standing there saying "WTF missybct" but I kept going. And going. An hour later we were both exhausted and I felt so humiliated and angry at myself I burst into tears and he stroked my hair until I fell asleep.
So...no - your not being unreasonable - both I and DP knew my outburst was entirely hormone triggered which made it easier. I'd say being mindful of hormones may lessen the need to turn to catastrophic thinking (i.e.; leaving DP, worrying about money) and being kinder to yourself may enable you to take a step back and say "This isn't the real TrueBlu talking, this is my hormones" - I find that REALLY helps to distinguish between my true self and my moods that are entirely dictated by hormones.
Not sure how communicative you and DP are, me and mine are very open with how we feel, but if you feel you can talk to him (choose a time when you feel less negative towards him perhaps), have a chat about how the surges/fluctuation in hormones are affecting you. I know people LOL about "moody hormonal women" (which I've never found particularly funny) but I do feel a bit more understanding, or at least compassion, should be given at a time where a woman is essentially at extremely high risk of stress both physically and mentally.
But, it does involve a bit of self awareness too - I am lucky in that I could say during my Mrs Rochester alter ego, "I'm being unreasonable and hormonal" - it's not easy, but it really does help the other person at who the hormonal behaviour is being directed at.