As per your query,i came to know that you have undergone Appendicectomy surgery,by lower midline incision and not by Laparoscopy
As it was done 2 months ago,it might have healed completely by now.
The abdominal wall gets stretched and enlarged in the later weeks of pregnancy
only.As you are 6 weeks pregnant,there is lot of time and by that time your scar will create no problem.
It also not cumpulsory for you to go for C section.You can try for normal delivery too.
I have done surgery of Appendicectomy during pregnancy also and most of them had normal deliveries.
So,nothing to worry.Be ralaxed.
Wish you good health