Talk to Gynecologist on Follicle Size

I am 26y female,MF 13 months.I was on ovulation induction this gave ne prolifen(clomid) morning evening from day 2-6 of my cycle,after that i got Ferti am injections on Day 6,8 and 10th of my cycle. Today on cycle day 12 i got follicular scan done but there was no dominant follicle,only 14mm in left ovary and 12mm in right along with other follicles.I want to ask what is the cause? Doctor asked me to take ferti M injection again should i do? I really want to get someone pls explain why the follicles did not mature.I got scan from Radiologist in shifa international hospital islamabad.