Aw mamsh, yan talaga ang nangyari sa akin after ng second baby ko rin! Yung muscle pain especially sa afternoon, parang ang katawan mo sobrang pagod kahit nag-rest ka lang, marami sa mga kaibigan ko ang naramdaman nito at sabi ng OB ko, it's common pag second baby na kasi the recovery is different and the body's more taxed na. Pero since it's been 2 months na at araw-araw pa rin, I'd really suggest checking in with your doctor about it, lalo na na may unusual sweating ka na rin, baka dehydration, hormones, or something else na kailangan i-check lang talaga para peace of mind mo; in the meantime, make sure you're drinking enough water (hindi lang pag pawis na) at getting as much rest as you can, I know it's hard with babies pero kailangan mo talaga mag-recover.