Bleeding

Okay so I started bleeding after sex last night and I’m still bleeding the following day, but it’s not heavy like a period, it doesn’t have that period smell, and it’s just blood and it’s not thick and clotty like a period. But I dont know if it’s too heavy to be implantation bleeding. We think I got pregnant about two weeks ago and I’m suppose to get my period in two days. I do have cramps but my vagina doesn’t feel tender and sore like it typically does when I’m on my period. And I have lower back pain. Does anyone know if this is my period, implantation bleeding, or quite possibly something else?