Atleast a month late for period tender nipples 4 negative pregnancy tests what s going on?

Abnormal cycle. It is likely you did not ovulate this month and therefore have not had a period. Estrogen symptoms, such as tender nipples, are common in times of anovulation.. Further evaluation may be necessary by your doctor. A repeat pregnancy test for sure in about a week.
It depends.... Depending on when you did the pregnancy tests, how long ago was your last period, contraceptive method, and your sexual history you could still be pregnant. Certain medications can have gynecological effects also. You may need a blood test called a quantitative hcg, to measure the amount of pregnancy hormone if present, or a pelvic ultrasound to look for abnormalities. Hormone imbalance maybe.