What’s wrong with me

when I wake up every morning I’m seeing dark blood when I wipe. So I put a pantyliner throughout the day and see no more blood. Even when I wipe. My vulva has been kind of sore & I did have some light cramping only for a few minutes a few days ago & I’ve been having lower stomach pain off and on (feels different from cramps) I don’t think it’s my period, my period never starts off with this spotting. Any ideas of what this could be?