Spotting vs menstruation.

Cristelle

Hello everyone. How do you tell the difference between spotting vs menstruation? I am so confused. At first I thought it was spotting now I'm not so sure. My cm doesn't always tell me when I ovulate, so I'm not always sure. It also doesn't always change in the way I think it should. Please help. I'm 31 ttc with our first. I also have MS, which can complicate things. One other question, if you are spotting, will a pregnancy test still be accurate?