Help!! 13 days late

Em

LMP 23/12/18

13 days late last 2 weeks I’ve been getting heart burn and nausea and sore breasts and frequent urge to urinate

5/2 blood test negative

7/2 cervix high soft and wet been getting lower back pain and pain in my right lower abdomen

Could I still be pregnant and just ovulated later then what I thought or has anyone experienced this before