Sooo confused!!

Okay guys. My last period started February 16th then I had spotting for a week around March 1st through the 7th. I just assumed it was ovulation spotting Anyways, now it’s March 19th and I woke up with heart burn, cramps and sore breasts. I’m two days late and the cheapie I used this morning said negative. Any ideas? I also check my cervix even though I know it’s not very accurate. It’s high and soft not like how it usually is around my period.. I’m also more wet and not dry and have had no spotting which I usually have a few days before my period.

Anyone ever had any of this before? Not really sure what to think. Should I get a more sensitive pregnancy test?

Thanks y’all! 💕