8dpo temp 99.9 again!

Laura • I`m 28yrs old , I`m a stepmom to an amazing 4yr old boy Levi. Just started BC pill 1st time ever to get my hormones and body evened out.
3&4dpo 99.9 5&6 DPO temp dip 7&8 back up to 99.9 every symptom I've never felt any of this before EVER back pain I wish would subside, I'm waiting for my HCG tests to come in mail from Amazon, please comment ideas