I had light pink spotting when wiping today(period due today)my breast tenderness also increased but neg hpt. l tube is blocked. could this b ectopic?

Possible but test is: A home pregnancy test is very accurate and not affected by foods, herbs, common illnesses, sexually transmitted diseases, or medications. A correctly done urine test gives a reliable result 3 weeks after sex (3 weeks after when conception might have happened) or 1 week after missing a period. If done sooner, a positive result is likely real, but a negative result may be due to testing too soon.