Aw, that sounds painful, mama! Thumb and wrist pain na connected like that could be repetitive strain (especially if you're carrying baby a lot or doing household work) or something else that needs proper checking, I'd really suggest having a doctor look at it, kasi it's hard to know kung ano exact cause without an exam, and you don't want it getting worse. One of my mum friends had similar pain and it turned out to be carpal tunnel from carrying her toddler all day, but she needed professional assessment to know for sure. Hoping it feels better soon!