pregnant?

Radi
Hello! 
My last period was on 08.09.2016 until 12/13. 
My boyfriend cum in me on 14th, 24th and 26th. 
Also i had just unprotected sex, but without cum inside...on 22rd and 23rd.
I am not sure when my ovulation was. These days I feel pain down in my stomache (right and left). My stomach is always rumblings and the day before i had strange yellow/white and creamy discharge.
My next period should be on 6.10.2016 (after 3 days). 
I took a early pregnancy test today and it was negative. Do you think that i could be still pregnant?
Thank you all.