Whats the first few signs of pregnecy

I just want to know what are the first few signs of being pregnant and how early can they come. and I have been havin sex since january of this year, never have worn any protection, and I have sex almost everyday and how come im not prego yet. I want to have kid by the one im with and I live with him and things, so whats up with me???

im also 18 by the way

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some symptoms are
nausea
tender breasts
dizziness

usually they take about 6 weeks or so and you might not be pregnant yet either because you r infertile or his sperm count is low or he is unable to have kids...talk to a specialist...

I just had my monthly and we had sex the day that I got off but my tummy is fat and it has been that way for like a week or 2 now and I would like to know if you can have your monthly and still be prego and that same time and I have it for 5 days . and what are they sings and my tummy is kinda hard too!?