My periods usually occur on 30th of every month, 1 or 2 day here and there. This time I didn't get my periods till 4th. I had too much stress last month and hence I thought my periods r late. I had unprotected sex on 5th and had an ipill the same day. I got slight spotting on 6th and two huge blood lumps on 7th. I am worried if I was pregnant earlier or this could jst be an effect of the ipill that I took after my usual date.