I vomited about an hour after taking Aviene birth control pill on the first day of third week but I completely forgot about it and had sexual intercourse in third week including the day I vomited. Apart from that I took the pills regularly. I had spotting this month and now I am on the second day of placebo pills but my bleeding did not really start. It is more like spotting.I cannot be sure if this is my period bleeding or just spotting that lasted throughout the whole month. Could I be pregnant?