After 3 months is do the doctor check.
It's probably just Wheeeee! Hormones :P BUT there may be something you can do to mitigate them
Know, for most women, to a DEGREE this becomes sorta normal. Hence "feminine deodorant spray", using deodorant under breatd & groun and pits instead of just pits, switching to clinical strength deodorant (like Mitchem, or an Rx, or the crystal ... Which is PURE active ingredient ... Rofl... It always cracks me up when people recommend the crystal as a 'natural' option. Regular deodorants contain 12-22% of the salts that the crystal has 100% of. Shhhhhh.)
In general, moms sweat more, from more places, and have stronger body odor than women who haven't given birth.
The degree you're talking about, though, makes me think your hormones are off kilter enough to rate nudging them (bc pills, thyroid meds, adrenals, SOMETHING sounds off).
I'm not an endocrinologist, though, nor OB... So I only know it sounds like one of your hormonal systems is hiccuping.