4 days late

Sorry but TMI

I’m 4 days late on my period and I’m never more than 1 or two days late, and I haven’t spotted yet usually I would when I’m about to start my period, but I have discharged it’s like watery/creamy sometimes.. ( tmi I know sorry) and I haven’t had cramps or anything really . I’m not on birth control or anything but with my ex’s nothing ever happened, could I be pregnant ? I been so tired lately and supposed sexual lately I’m never like that.