I haven't had any pregnancy symptoms at all, I've had some food aversions at the beginning for a couple days but nothing since, no nausea, never even thrown up, nothing, I feel completely normal...

Today when I was on the train I did have sudden lower back pains, like nerve pains, with cramping but it only lasted 5 mins till I got off the train, I've also got a very big belly like I'm 25 weeks already.

I never had any of this with my first pregnancy 3-4 years ago, with my first I had nausea the whole way through, certain smells would have me heaving, I was very tired all the time whereas this time I'm so full of energy there's been no problem with drinking no coffee.

My first scan is in 2 days, I haven't had any pregnancy conformation appointments, only blood tests for any stds or illnesses but does all this sound normal or worrying?