girls can you help me

Gabrielle • I`m 18 with a beautiful baby girl currently trying for baby # 2
Girls.i need help , I would Post the picture but since I'm setting up my phone I'll post it later, long story short my AF was supposed to come on feb 13 .. on feb 12 I have unprotected sex and he did cum.. as in now I'm 1 week and 5 days late I took a clear blue pregnancy test came back neg or so I think but when I put invert color on my iPhone I can see a very light light faint line... is it to soon ? Or I retest when I'm 2 weeks since it's only been a week and 5 days?.. really need help thank you