Losing my mind

Keisha

So I’ve had my IUD removed seven months ago. Trying to conceive. I had 35 day cycle the 1st month, but I’ve had 26 or 27 day cycle since. I had nausea, back pain, breast sensitivity for most of last week. My period is 3 days late, yesterday and today been having spotting, last 3 test have been negative. I’m freaking out, just want to know with out a doubt. Should I just assume I’m not pregnant.