IDK Can someone plz help and I took a test yesterday it said negative but Ik I took it to early

Yesterday I was 6 dpo and me and my boyfriend did the do after I had some bleeding. But sex was kinda of pain full but when I went to the bathroom and wipe I seen some blood it’s very light and light pink it disappeared but came back . My period is not due until the 28th can someone help . And I had some pinkish water discharge on the 15th I will include the pictures can someone plz help .