So many pregnancy signs but negative test?

Sh

My period is 3 days late. I'm having bleeding gums like I had when I was pregnant and my breasts are swollen significantly and tender. I'm also having a lot of thin mucus discharge. This is all opposite to my normal pms.

Has anyone else had a late period and negative tests and ended up being pregnant?

My period has always (for 8 months) had 12 days after ovulation to the first day of my period.

It's been fifteen days now.