Pinkish brown discharge during week 5?

Kate
Hi all, I just had a bowel movement and noticed some pink/brown ish discharge when I wiped. I cleaned my hands and my cervix still seems high and closed, but I'm panicking now. Last time this happened (also about 2-3 days after I got my BFP) I bled all the way out and miscarriaged. 
Could this possibly be normal? I feel okay. Last time I had a what I call "impending cramp of doom" from before I got my positive to when I MCed. It's not dripping out was just there when I wiped and swabbed.