No period yet?

Hello yall! Hope all is well! So from my positive opk on 5-18 i am guessing i am around 14-17dpo. No period yet.. period was due 3 days ago. I have been having some moderate cramping and some nausea off and on but not sure if thats bc of the cramping? I have had some spotting but it has been very light in amount and light tan to light pink. Also a lot of burping.. and yesterday i started having a stuffy nose. Also ive noticed a rise in my temp... it has been 99.2-99.8 for a week or more and it is usually 98.7. I want to test but scared to.. last test was neg on 6-3 with a clearblue digital. Any thoughts?