So I want to wait until as late as possible to inform my work, but I'm scared that I wont be able to hide it past 10-12 weeks!
I'm only 6 weeks (and this may be still partly bloat) but my work pants are digging into my waistline bad. (red marks when I take them off)
How far were you when it was obvious?
Re: carrying twins? come on in!
I noticed my co-workers looking at me differently around wk 11 an d1 even asked me. It was pretty obvious on me by 13 wks.
I've already had my twins, but I didn't start showing until almost 18 - 20w (I'm 5/7, average build). I told immediate co-workers around 14 - 15 w. Funny thing is when I went out on bedrest at 24w many people in my office didn't even know I was pregnant!
I didn't really pop out until the end and I ended up having almost 9lbs of baby at 33w! I have no idea where they were hiding that whole time! 
Good luck!
I told my work at 12 weeks, I think some people had suspisions. I have a small frame and even the couple extra pounds were obvious. I had to start wearing maternity clothes around 15/16 weeks.
Have you tried using a Bella Band? You put them over your pants, so you can unbutton them, and they still stay up and no one can tell your pants are undone.
Right now it is most likely bloat, but that bloat will soon be replaced by babies!
14-15 weeks
I want to say that it was obvious at 12 weeks. Plus, there are lots of moms and grandmas in my office and I think they figured it out even before that. But, this is my 2nd pg, and DD was just under 12mos when I got pg, so I wasn't totally over my post-baby body to begin with!
I was going to say that you could wear loose sweaters, etc, but I am noticing that you live in So Cal, so that is probably not an option! Ditto the idea about the Bella band. Plus, there are lots of non-maternity flowy type tops in stores right now, you could use those for a little bit.
I gained the weight and it was obvious to me after about 10 weeks, but no one could tell at all. I had to tell everyone until i was about 16 to 17 weeks. I literally just popped out over a two day period. I'm still not really big but you can clearly tell. I would say 14 to 15 weeks is def safe. Just get a bigger pair of pants that are comfy to you. I learned that wearing your cloths that were tighter just made it a little more noticable. So just be a little more cautious on what you're wearing, but don't worry I just really started wearing Maternity cloths like a week or two ago, and I still wear a lot of my regular cloths.
My bump became pretty obvious around week 12. At 14 weeks, I can still get away with wearing 2 pairs of dress pants (a bella band) that were a little big on me pre-p, but I have a feeling I won't be able to fit into them in the next week or so.
I told work fairly early -- simply because I was too excited not to share :-)
GL!
actually yes, last weekend I used it with my jeans.....it felt sooo good!
IUI#2 - 01/07/09 = BFP!!! Twins!! Pre-term labor 20 weeks
IUI#3 - 1/31/10 = BFP!!!! M/C - 8wks
IVF #1 - 7/2010 = c/p
FET - 9/2010 = another c/p
IUI#4 - 2/14/11 = BFP!
i was horribly bloated right away- and it was my 2nd pg - so i was showing pretty fast (or at least looked pg very fast).
but my boss' wife was pg with twins (her 2nd pg) and i couldn't tell at all when i saw her around 17w - everyone carries differently.
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My IVF bloat never went away - so I really haven't buttoned the top of any of my pants since mid December when we were doing all this. ?Most of my work knows already since we're so close, but my students have been asking questions (they really don't know better). ?DH and I are actually going to the mall tonight to Motherhood Mat. to look into some pants. ?It's getting pretty bad.
I think I'm showing super fast because I have no hips (just straight down) and am very small - so they literally have nowhere to go but out!?
I carried them in my belly. People that know me well were able to tell early. A stranger congratulated me at 12w. I started wearing maternity pants at 8 weeks.?
https://billandkarriebrand.blogspot.com/2008/10/belly.html
Beta #1 15dpo 298, Beta #2 18dpo 1048
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I was in my maternity pants by 11-12 weeks, but this is my second pregnancy so I popped much earlier.