Post partum body chills, shivering

A week after birth, i was sleeping at night wearing long sleeves longpants with socks and blanket over me when i experience body chills and shivering. It was so cold like there was ice all over my body. I checked and i had no fever. I shifted to another room and slept with a very thick comforter and the fan is off. Woke up 2hrs later sweating but i can still feel the chills. It started to disappear few hours later after taking some paracetamol. 3weeks later i experience it again. Anyone had the same problem? Do i need to see the doctor?