FT CS Mom here. Help po.

I had my baby at 39 weeks and na emergency CS ako, I was fine during my stay sa hospital for 2 and a half days as in, no hilo, no chills, light bleeding lang and nakakalakad na din ako sabay ihi at poops, now na nakauwi na ako I had a slight chill kagabi but no fever at ngayon nasakit ang lower right back ko [only that part hindi buong likod] . Is it normal po?