Oh Mama Love, I hear you. I think it is totally normal between the hormones and exhaustion. I've been a little down, but I'm actually on an SSRI as well for anxiety and that has kept me afloat through my struggles (like I just puked- AGAIN- NARG!!!). Like Iris says, not ideal (I had intended to stop taking it before we were TTC, but the anxiety of TTC made that tricky), but taking care of mama is critical! I trust my doctor when she says it's fine- she's normally very conservative about giving meds and I'm on a very low dose (and actually starting to wean myself off it).
You have SO MUCH on your plate. You can be thrilled about the coming twins but still struggle with this, and I agree at least talk to your doctor and see what they say. It's made harder when you can't talk to DH about it. My DH was a bit of the same way- he gets really frustrated when he can't help and he doesn't understand.
Whatever you do, don't beat yourself up about not being happy, looking in to meds, or whatever else you're feeling. You are not alone! Don't let yourself feel guilt-ridden for needing to take care of yourself (so you can take care of your twins and family).
Oh- and sleep is ESSENTIAL at times like these. That is actually what drove me to medication, not being able to sleep puts everything in a downward spiral. My doc pointed out how sleep deprivation is a classic and effective torture technique! Please talk to your doc and find a solution that helps you take care of yourself.
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