My SO (F30) gets extremely anxious about lots of things and it has a huge impact on our lives (her more than me, of course, but as we live together and have a little boy it tends to affect us all a lot - we don't get to do much as a family as she gets upset at things and I get very little 'down time' alone as she struggles to look after our son so I'm permanently exhausted).

But the worst thing is her health anxiety. I hesitate to call it hypochondria but it pretty much is exactly that. She is constantly worrying about small sensations, literally sometimes worrying that a little stomach ache could be cancer, or something like that. Not to say she assumes she has cancer, but she treats it as good a possibility as food poisoning, or just trapped wind. So she's constantly freaking out and scaring me by proclaiming that she could have x y or z illness, often in front of our boy, and I haven't got any patience left, so I'm increasingly liable to getting pissed off and even snapping at her, especially when our son's in earshot, which makes me feel worse as I don't want to get angry in front of him.

Tonight she gave me some free time by going out with a friend for the first time in ages, and I was grateful (Ive gig asperger's so I need down time alone a lot). But she came back complaining it had been awful as she felt ill thd whole time and was terrified of vomiting or shitting herself (this has never actually happened but is a big fear of hers), so I felt awful for her staying out to give me time alone, and snapped at her thaf she's confusing anxiety symptoms with other symptoms and being overly dramatic, and then said I was losing my ability to show sympathy for her as it's so frequent and endless. I was quite cross and now she's in bed crying and I'm feeling like shit downstairs.  

AITA for getting angry and snapping at her and upsetting her by disbelieving her symptoms? 