What can I expect?

Megan
It's been 3 months since my last period. I stopped my birth control pills at the beginning of August, had a normal period, then another short one 25 days later. Now I'm on CD 91. I requested an appt with my doctor, who wants to give me and exam and run some labs before doing anything else. Is she checking my hormone levels? What can they give me to fix whatever is going on? Should I be concerned that there's a problem with my cycle? 
I figure that some of you have probably gone through the same thing so I thought I would ask. I'm not really that worried, but so eager to TTC and I hate that my body isn't doing what it's supposed to. I'm praying that it's just taking a while to regulate but a part of me worries that there's something wrong. Thanks ladies!