Can cephalexin affect pregnacy test results?

Patient: Yess hello ive been two days late im my period i have tender breast and very hard ive been taking cephalexin 500mg for a UTI ive been taking a home pregnancy test they been coming out negative can it be that cephalexin is interfering with my Pregnacy hormone?

Symptoms: Tender breast

Doctor: No Cephalexcin will in no way affect the pregnancy test results. Your periods could have been delayed due to UTI . You m ay repeat the test after a week if you still have not got your periods and then visit your doctor . Also if you do not want to have a pregnancy now then please do practice safe sex.