Fever and Chills postpartum

Has this happened to anyone else? Also I have called the doctors office and while they don't seem concerned I am.

I woke up this morning with the chills, like really bad, teeth chattering, had my husband get more blankets to try and help stop them. In addition I had a slight fever.

I was told to take Motrin which I did and as the day went on the fever broke. However after the motrin started to wear off the chills and fever came back.

Is this a normal part of postpartum healing? I had a bit more blood overnight than I normally do but did not soak thru the pad in a hour.

Thanks for any input.