Maternity clothes!

I went twice to try n shop but couldnt find any comfy clothes :( dont knw what should i wear at appoinments...i m currently 13 weeks! I was size 12 before pregnancy..n i tried 12 n 14 both in maternity jeans but it didnt fit or i can say it wasnt comfortable also i m petite so maxi dresss is a headache too...plz help me my lovely ladies ...whats the most comfortable dress is in pregnancy??