2nd pregnancy I started showing in the late 2nd trimester. No one believed me when I told them I was pregnant. It wasn't until like week 25 when I started showing. But I did go thru a whole world wind of weight fluctuation. I was my heaviest when I found out I was pregnant (at the time 8weeks and a few days) then bam lost just about 24 lbs from morning sickness and just everything making me nauseous. In the end I ended up gaining some of the weight back but was still on the negative side. I guess it just depends on how your body wants to take on the pregnancy.
This will be my third baby, fifth pregnancy and by 6 weeks I was HUGE! I had every intention of keeping it under wraps at work until second trimester but my receptionist already clocked the bloat bump and the bathroom runs so I had to tell work by about week 7/8.
I found out about my second pregnancy very late but I’d say I started feeling a difference in the way my clothes fit very early on. Every baby after the first shows earlier and shows more. I have known many women who couldn’t keep each following pregnancy a secret until the second trimester because they were showing too much to hide. But if you’re in fall/winter season where you live, you do have the benefit of chunky sweaters!