Could I be pregnant?

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Had unprotected sex with my husband on the 26th and he finished inside me. I did take 2 tests but I think it might be too early to test so I don’t see a second line. Idk when I’m suppose to get my period as they are always irregular but I started having brown discharge since yesterday, not enough to fill a pad but it’s there. I don’t have cramps the only thing I’ve had for about a week of tender breast. Is there a positivity that I might be pregnant? Whenever I start my period it just starts red