Body temp! Please help!

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The past two days I’ve been feeling really hot and not like hot flashes but feverish.. I’m 5 weeks along. I’m not sick at all and my temperature has been all over the place from 97-99.7. Is this normal?? I’m so scared because I heard fevers first trimester can be dangerous and I also had a blood infection within this past year. Has anyone else been taking their temp or noticed higher body temperatures but is not sick?