Hello Dr. Grief, I am a wee bit nervous, I am 5 days late on my period with just mild symptoms of headaches, fatigue, very mild cramping, and sore nipple area. During the time around ovulation I was diagnosed with bronchitis and had to get an inhaler (albuterol sulfate) and AZITHROMYCIN tablets...which I guess act like antibiotics??? I've been using my inhaler on and off just when I'm coughing a lot but I was completely fine by the time my period was suppose to show up. I'm concerned because I did conceive during ovulation but I've had 2 negative tests and now its 5 days late??? Could I possibly be pregnant or did my medication cause a later period?