What are the signs of having a period?

What are the signs of my period about to start? And how do I know if I'm going to start my period soon?

• If you haven't read any of my recent questions, I had sex for the very first time on the 25th of March. We used a condom and he didn't even ***. On the 3rd of April I started my period and it was normal, it lasted about four to five day like normal and a normal flow. I have heard that if I start my period that I'm NOT pregnant, but I also have heard other wise. I heard that there's still a possiblity that I could be pregnant. I should be starting on either the third or the fourth of may, but I'm kind of scared that I'm not. Am I pregnant? What are the signs that I'm going to start? Please help me.

• Answer:

  Your probably not pregnant but if your period doesn't come in May then go to your doctor to get a pregnancy test or buy one but because you got it in April 8 days after you did it i don't think you are... just have to wait and see