Transverse lie at 26 weeks. What are the chances you will change position? ?

I am 34 and pregnant with my third. Both of my last two babies were 9 and 11 pounders and from what my doctor as told me this little girl is already very lengthy for 26 weeks so much so that he is worried that her size if it continues to increase that I may not deliver her on time but early. ( I am very petite) She is in a transverse lie as well so he has started to discuss the options for her and I if she doesn't change her position. I was wondering if her size and my narrow pelvis could keep her from changing positions easily? I had the sonogram 4 weeks ago but I know she is still laying transverse because I feel the solid pressure from her head under my right ribcage ( which is incredibly uncomfortable as the weeks move on) If she is big like my other two is it likely she will be able to change her position in my small pelvis?