I posted this in the general ttc board but got no responses. I'm freaking out that this is not implantation bleeding but something bad...

I just went to the bathroom at work and when I wiped there was light pink. Double and triple checked and yes I'm having light spotting. Could this be implantation bleeding? According to glow ovulated 7/11. When I was pregnant with my son I did not have any bleeding. I am worried something else could be going on? AF isn't due until around 7/25. Kind of freaking out! Any advice would be great