I've been having unprotected sex for the last month/ month n half, my boyfriend does pull out and, that we are aware he does do it in time every time but I did forget abt pre cum, I have been having pregnancy symptoms like my boobs are sore, tiredness, feeling very sick in the mornings, I have pains at the bottom of my stomach and a stitch like pain but it isn't a stitch, I have had pregnancy tests done and 3 are negative, one came back with a faint line then I done another one 4 days later and it was bolder n blue but people were saying that it's an evaporation line so I went to the clinic and done a test and it was negative but I'm now 3 days late on my period and I'm never late like ever, so what should I do, does anyone have any advise ?