This may seem like a stupid question - please forgive me, im a FTM... but is there a link between breast size and ability to breast feed?

I'm a small 34A and my boobs have not grown even a millimetre during pregnancy and ive had no evidence of any colstrum - no leaky boobs at all.

I'm now 35 weeks pregnant and really worrying that my breasts just aren't capable of breastfeeding and my milk won't come in, which breaks my heart because I really want to breastfeed.

Anybody else had similar experience and milk has come in fine?