Could I be P?

I’m new to all this. It’s all very exciting and scary at the same time. :)

I’m confused and think I could poss be pregnant. I’m 10 days pdo and all week I have had backache, bloating, increased urination, hunger, mood swings, gassy, sensitive to smells and slight cramping.... I took a test 6 days pdo which I know was far too early (I couldn’t wait) and obvs came back BFN. My AF was due yesterday according to my app but didn’t come and today I’m getting cramps but still no af.... but all tests keep saying BFN ... I don’t think I am as I keep getting cramps but don’t know where aunty flow is? :(