Hi. I am 28 years old. Since last 1 year I have my periods irregular, like normally I have 28 days cycle but from 1 year it was come 2 days or 7 days late. This time also same but this time it come 2 days early. And flow was not normal. It's spotting on first day. And not appearing on 2md day. I was worried. I did my pregnancy test on 4th day of period but it was negative. Now I don't know that I am pregnant or what?