Small Follices :(

I had an ultrasound yesterday on CD 13 to check my follicles for my second round of clomid.  My largest was only 15 mm (20 mm or larger is what my dr was hoping for and would mean ovulation should be soon).  Next month will be 100 mg of clomid.  My dr. said that there was miscommuncation and that she didn't know that my 7 DPO wasn't until CD 28.  I would have been on 100 mg this cycle if she had known.  Hopefully either this cycle or the next will be successful, because I'm going to take a break from meds if they aren't.  My husband is not ready to move onto IUI or anything.