Waiting to announce

So my MIL annoys the living piss outta me and the last time I was pregnant she would try to forbid me to having or doing certain things that are if no risk in a pregnancy. i.e. carrying a box that weighed like 5lbs. I asked my husband if we could keep it a secret from her and he said he doesn't mind us keeping it from her as long as we keep it from everyone else as well...DONE! I could hide this baby until the day I go into labor, but he said 6months at the latest. :/ I know my MIL and she has done some things to my family that forced me to call the cops on her; So anytime I think about the look on her face when she finds out she didn't get to try and control my pregnancy, it makes me down right giddy!