Upon my second viewing for, AHEM, research purposes…
1) Claire's voiceover in the beginning speaking about her memories falling away like pearls dropping off a necklace only to have Jamie give her his mother's pearls and new memories…awwww.
2) I felt like I caught Claire thinking to herself many times, "Did Frank and I…

I don't think so. I believe at this point of the story he would still be a youngster. As I recall, when they meet later he still is a "child" although just old enough to wear a Redcoat uniform.