Feeling feverish during pregnancy

So I'm about 7 weeks along and every once in awhile I feel like I have feverish like I feel hot but I have the chills so I bundle up under a blanket I've taken my temp and it says I'm only at 97.5 or 97.6 it stays around the same area and so I was wondering if anyone else has had or is having this issue as well. Any info would be great! Thank you!!