Telling mum?

I would tell your mum

Ive always told my mum when Ive found out Im pregnant, my first pregnancy ended in a miscarriage so having my mums shoulder to cry on was really good.
And my other two pregnancys, I just loved telling her!

Tell your mum and his mum! Just be honest - "we wanted to tell you because we're excited and this seemed like the perfect time to share our news with you, but we're not telling anybody else until 12 weeks and it would be nice if you could respect that"

I tell people whose support I would need if something went wrong. You'll burst if you don't tell your mum (or at least I know I would!!!) Congratulations on you pregnancy, by the way!

My mum managed to keep the secret too

My Mum was the first person I told! I even told her before telling DP cause I went to the docs for something completely unrelated then just so happened to do a preg test while I was there and hello BFP! lol. I had to go back to work and act like nothing was going on so rung Mum from the Doc's carpark! Didn't wanna tell DP over the phone while he was at work so told him the minute we got home. I also told my siblings that day as well as DP's family.
It made it so much easier having people to talk to about all the excitement and made it easier to keep it secret from everyone else (IYKWIM?) until the 12wk scan!
Congrats and good luck!

I wouldn't tell so early - we waited 10 weeks before telling family, and two scans to confirm everything was okay as well. Told inlaws first and despite them agreeing not to tell people until after the 12 weeks and we said it was okay, FIL couldn't contain himself and went and announced it to people at the golf club (annoying as his friend there is my good friends FIL and I would have hated for her to find out second hand). He was so excited he couldn't help himself, which I understand, but we hadn't told my family either so he should have waited. He literally only lasted a few hours before he had to share the good news with someone else, and once the cat is out of the bag (so to speak), it's not a secret anymore.

Also, we knew once my mother knew the whole world would, as she is incapable of keeping a secret, especially for something so big and exciting. We also wanted to be the ones to announce it to friends and family ourselves, so by waiting we were able to do that rather than having our parents inform our siblings etc.

We told MIL the day I got my bfp, and my mum knew as I had sent my sister a text, and she looked after my sisters kids while we went for my appt at the docs to get it confirmed.

I am glad we didnt wait to tell MIL, as 2 weeks later she found out she had terminal cancer, and she passed away the day I ticked over 18 weeks so she got to be excited for 3 months, rather than just 6 weeks if I had waited til the 'all clear' at 12 week scan.

I agree with what most people have said... tell you parents so you have their support should the unfortunate happen, but also make it clear you dont want it going any further until the 12 week scan, or whichever milestone you choose, just in case.