3 DAYS LATE? 😳

Daisy

So I am 3 days late and has unprotected sex on the second day that I was late and I actually spotted pink/brownish when I cleaned my self we've been trying for 3 years to have a baby but we're not sure if we can I've also been cramping like if I'm going to get my period but still nothing..also very tired and been short out of breath can someone just tell me if this is normal or if it's too soon to take a pregnancy test.