Could I be Pregnant.. Need advice QUICKLY!!!?

I had a curette in August. No period in September. I am pretty sure i ovulated around October 12/13. I am now very tired, hungary, have a big taste for chocolate. I am also urinating HEAPS. I keep getting very bad headaches and my back is killing me. Thought maybe that my period would come on the 29/30 October, but nothing has happened. Just to add, i feel pressure in my pubic region like i wanna push something out. Weird i know, but don't know if i could be pregnant. Please help. Wanting to be pregnant, but not sure. Thanks. Mel.