All Acronyms. UA [Internet]; Jul 31, 2016 [cited 2016 Jul 31]. Available from: http://www.allacronyms.com/_Military/UA. 'UA', All Acronyms, 31 July 2016, <http://www.allacronyms.com/_Military/UA> [accessed 31 July 2016] All Acronyms, UA (Jul. 31, 2016, 2:07 AM), available at http://www.allacronyms.com/_Military/UA.
1 Human (Homo Sapiens): Humans begin to show self-recognition in the mirror test when they are about 18 months old, or in what psychoanalysts call the  mirror stage .
You will probably start to be aware of something when you're about 18 to 22 weeks pregnant (Gillieson et al 1984) , although it can be later. If you've had a baby before, you'll know the tell-tale signs. You'll possibly start to notice your baby moving around between 15 and 18 weeks (Gillieson et al 1984) .