[violetpretty]

It's pretty common to have doubts during your NM period. First, worry about getting better. Second, friendship is a two-way street. Once you are well again, explain to your new member class and the rest of the chapter what has happened (i.e. you've been sick so you've been unable to attend most of the events). Start reaching to people! You met 10 girls in your chapter that you clicked with during recruitment! Some people are closer with their new member class than they are with their big. Hang out with them, too!

Based on what you've said, you probably just feel isolated because you've been sick. You would have missed events in chapter B if that's where you would have pledged too, and would probably feel isolated as well. Get well soon and immerse yourself in your chapter.