Pregnant?

Hi everyone, I'm now 5 days late and the pregnancy tests I took yesterday for the last time were negative I just went to the bathroom, and when wiping, there was a bit of pinkish blood. Is there a chance I'm getting my period, or am I still pregnant? I've had a lot of back pain. And my breasts are large and sensitive. My stomach hurts now, I really had the feeling I was pregnant. But now I'm starting to doubt. What do you all think? We've been trying for 3 years, so I'm really hoping!