Second pregnancy

Ok I am looking for what I hope is honest reassurance. I am 8 weeks with my second pregnancy. With my first I did not show or need maternity clothes until around 5 months. This time I already find myself reaching for my maternity clothes as my others feel tight. Despite having the worst morning sickness and limited appetite - I have managed to worry myself that there could be multiples in there - but hoping that this can be normal - anyone else willing to share their experience??