Might i be pregnant?

I am due for my period and since my last child four years ago I have been very regular! I had very light pink discharge in my fertile week when I say pink almost nonexistent. I usually don't spot before my period but I do get sore breasts my breasts are not sore and I have the same very light pink discharge today. But no period yet. Maybe my minds playing tricks on me but I never experienced this with my other three pregnancies but I also wasn't trying with them! Any advice greatly appreciated!