To all mothers out there! :-)

Hello ladies,
I've a question and would appreciate some answers please!
This is to all the pregnant or women who were pregnant at some stage. 
How early did you experience symptoms that lead you to believe you were pregnant if you did experience symptoms and what were those symptoms?
It's been about two weeks since my last period and two weeks since unprotected sex. So since then I've been experiencing a couple of body symptoms I don't know if these are related to being pregnant or not so I'm just looking for some insight ☺️
Currently I'm experiencing:
-sore breasts
-mild cramping (feels like mild period pains)
-light headedness