I had sexual intercourse eight days ago, and now I am not sure if I am pregnant or not. So, I took a pregnancy test last two days ago, but it came back negative, so I decided to wait another two days, but I still have not got my periods, and I have never had irregular periods. I had missed my periods for the previous two years, and during that time, I became pregnant, which I then aborted using an unwanted kit. I have been taking antibiotics and cough syrup for the last ten days because I had a cold and a cough. Please help.