I think i wld tell too... we were really adamant not to tell family or friends until the 12 week mark because we told them all at 6 weeks pg last time and my family were so excited they told EVERYONE!! I had the local butcher asking me months later why my tummy wasnt huge yet.. it was really hard explaining it to a random We only wanted to wait this time because i didnt want to wreck the excitement for my family.. its the first grandchild and i wanted my parents and sisters to be super excited and not worried for us!
It backfired tho.. at 10.5 weeks my mum busted out with 'I have booked a cruise for next april!' Oh my god i nearly died when i found out she was going to be gone right on my due date. She has been trying to organise this cruise with my auntie and uncle for months and months. We decided we had to tell then so she had enough time to cancel and change dates.
She is still trying to work out a new date now.. and sadly her and her partner will have to go on their own because all the others have to go on that date in april.
I feel really bad (my mum is fine about it tho.. definitely no guilt trip) because if we had told them even just a week earlier she wldnt have wasted a few thousand dollars on the cruise.
Like the others have said.. if u can trust ur mum not to tell (a few stern words will probably need to be used!) i wld definitely be telling them. I hope u can convince ur dh that its the right and best thing to do
Good luck!
xx