measuring big should I be concerned?

Courtney
Hey peps, had my 28 weeks check up today and I'm measuring 2 weeks ahead of what I'm meant to be, I'm quite worried as my first boy was 3 weeks behind from this stage to delivery which was 8 days before his due date & he was only 5lbs 11oz, im 1 frightened because I don't know how much bigger I can get im starting to struggle slightly with things now as it is, 2 because I'm really frightened I won't be able to deliver naturally or without being cut or tearing and 3 because I feel like if he comes early it would shorten the time I have left but we aren't quite finished buying things like his bottles and pram yet :( is anyone else on here measuring ahead at all or did with a previous pregnancy? xxxxxxx