Feeling lost in the system

Any ftms feeling a little 'lost' in the system? I'm luckily very low risk and havent had any complications with my pregnancy but i feel ive had no contact with midwives or any real guidance except for that list of symptoms in the blue book. Im 28 weeks and have had to chase my mat1b form with my midwife quite rudely telling me i needed to ask for it they don't just give it. But how am i meant to know these things if noone tells me? Also when do you start finding out what percentile your baby is measuring in? I feel everyone has so much more info than me and ive just got Dr google here to guide me