35+3 weeks 3rd pregnancy contractions

[Sarah5656]

I'm 35+3 weeks pregnant with 3rd DC.
For the past 3 weeks have had loose stools (sorry tmi!) and nausea. Also lots of Braxton hicks on and off.
Since this morning have been having back pain and tightenings.
The last hour and a half I have been timing them and they are every 6/7 mins lasting about 30 secs.
If I get up and move around the back pain gets worse along with stronger tightenings.
Do I ring the midwife?
This is my 3rd pregnancy you would think I would know if it's early labour or not but I know that 3rd babies can be a bit unpredictable!
Not had a show and my waters haven't gone (but they didn't go till late in labour with my first and had to be broken with my second)

I'd phone, see what they say. With DS my
ctx stayed at 6m apart until my waters were broken at 7cm.

I'm worried that if I ring the midwife and she tells me to go to the hospital to see what's happening, they hook me up to the machine and nothing happens!
And they tell me it's not contractions (although it feels like it) how embarrassing would that be!

They aren't ridiculously painful. I can feel them they are uncomfortable but they don't take my breath away.

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