Is it bad that I feel completely miserable ? Like , okayy so I had a kid before , but I never had…

Is it bad that I feel completely miserable ? Like , okayy so I had a kid before , but I never had ANY symptoms at all . Throughout the whole thing , carried him full term & everything . It was a breeze . But now , I get night sweats , insomnia , horrible back pain , my whole body is on fire by the end of the night every night . Fatigue & nausea in the morning ... I'm trying to be positive here & not a nag but I'm just physically tired 😓