Trust yourself and make yourself heard! Some people have text book labours, some don't.
DC1 in hospital: "you're barely in labour, you're not coping, you have to have meptid (I'd refused pethidene and hadn't wanted anything), your baby isn't ready to make a move anytime soon" at 4:30am so I hgve in because they panicked me and there was no way I was going to cope with another ten hours at least of what I was going through. Baby born at 8.46am, almost in ward because they didn't listen when I said I was pushing. Husband made them listen when I started pooing...
DC2 (planned home birth): v experienced, v nice midwife at 7pm examined me after a day of contractions and gave me a sweep, patted my knee and said "barely 2cm dilated and you've had one already so that's just normal, we won't be seeing you again until the morning at the earliest". Called them back at 10pm, was told on phone that I only thought I wanted to push because baby was back to back but they'd come to reassure me. Midwife arrives 10:20, sends hubby back down to blow up pool because we have lots of time, I literally scream at her to get him back up NOW, she tries to calm me down and reassures me I am not in labour and wants me to lie down do she can examine me, in the end, she vaguely gets near me, feels head, puts monitor on my bump and says "baby distressed, we need to get it out" so I push, baby born 10:39pm, shell shocked so not breathing so two ambulances turn up by which time she's fine and screaming and I'm stark bollock naked introducing her to four ambulance crew.... Told you I was in labour, love!!!
DC3 (planned home birth): Had unexplained bleed after ~6 hours of contractions so, very sensibly and responsibly, go in to be examined. Examined by midwife and obstetrician at 5:30am, "not in labour, no contractions showing on monitor (no f'ing clue what they thought I was groaning about then), keep you in for 24hrs, then you can go home". Hubby and I swear I am in labour, this is DC3, we have done it twice before, this is what happens, they say "no". Hubby looks at me, at clock and says "8:30am?", I say "8am". Staff look at us like we're crazy. They try to transfer me to observation ward. I refuse and get in bath (splattered with someone else's blood up side and up loo but never mind...) and DC3 born in bath at 7.19am. I was NOT mature and once I'd checked sex, fingers and toes was heard to say "you will tell that obstetrician man that I was right, won't you? He said I wasn't anywhere close to labour less than two hours ago!!" to the midwife.
For DC4, we will be very very very forceful. I do it my way (3 out of 3 back to back, they turn the wrong way in labour apparently because they're the right way round beforehand). It's the only time I think I'd like to be on OBEM, just to show that sometimes, they have no clue and Mums are right!
To be fair, once the midwives realise I am right and they are wrong, most have been great and their advice (drop your shoulders!) and reassurance is bang on. I just wish they'd realise I was right earlier on!!!