if I go ape at my mother over this? (disclaimer - there will be swearing)

[bohemianbint]

Right, I'm 8 weeks pregnant today and we told immediate family under specific instructions not to tell anyone else for the time being, as we wanted to wait until 12 weeks-ish to tell the wider world.

I know my mum told people on New Years Eve, which annoyed us massively and I told her to make sure she didn't tell anyone else.

I was just in tesco, and not a word of a lie, the fecking trolley bloke comes up and congratulates me - he said my mum's told him. I was so angry I was shaking and now I'm still shaking but I could cry. DP hasn't even told his grandparents yet FFS! I know some people think it's not a big deal telling everyone, but it was a big deal to us and we told family not to tell anyone. It just shows such a lack of respect.

I am thinking I'm probably just going to call her up and go fecking mental at her but I'm venting here first to make sure I don't go overboard.

I'm not being unreasonable, this is well out of order isn't it?!

YANBU.

My siblings and I have a saying...

"If it's not thing it's your mother!"

It will get better. Give it time.

oops...shouod read....

"If its not one thing its your mother!"

Crikey, my brain has frozen up today

And, obviously that should read "should"

oh dear.

Am only 4 weeks pregnant and the brain drain has begun - aargh!

Oh dear, it does sound to me as though she feels guilty and is getting all defensive about it as she's too ashamed to admit that she was wrong.
As she was fine with secrets before, I don't think that you were at all unreasonable to expect that she would do the same with such an important secret. Now that she's told, not once but twice (i.e. after you told her that you were upset) I think that you can safely assume that you can't trust her. I would keep everything else from her (sex, name etc.) until you give birth - not to punish her, but just because she has proved beyond doubt to be untrustworthy.
DH has a "two strikes and you're out" policy. I think that anyone can mess up once, just through basic stupidity, but when you've done it a second time you deserve to be out of the loop.