Need Advice

So my ovulation day was the 23rd of January. I have been having spotting on February 3-7 on and off. The spotting has been light to only being able to wear just a pant liner or when i wiped it was just on the toilet paper. So now i am 3 days late on my period i don’t know if i should take a test or not because i really don’t want to get my hopes up. i have been having really bad lower back pains, headaches, really bad nausea, tired a lot, and a little here and there tenderness breast. any ideas on what i should do?