Pregnancy symptoms? Tmi

Im between 3-6 dpo. Ive had diarrhea for 2 days, headache, stomach ache, gassy. Also my nipples are a bit darker but they dont hurt. 
Also i had a fever yesterday, my temp went up to 99.4. Usually its 96.8.
I had weird cramps during ovulation which i never have either. This is all new to me. These are all things i never have