My dd is almost 16 with no periods. She is very slim and always has been (in 2nd centile). She has some breast development and says she has some body hair. My DH was also quite a late developer and his sister apparently didn't start her periods til she was around 16, so I haven't been overly worried about it. Should I assume it will just happen within the next year or so (she's not quite 16, birthday is Feb)? To complicate matters, she has a huge needle/blood phobia so she would never in a million years consent to the gp taking blood for tests etc (she actually ran out of the appointment for her booster vaccines when she was 14!). Any advice please?