Organic milk. A glass of milk. Organic milk refers to a number of milk products from livestock raised according to organic farming methods. In most jurisdictions, use of the term organic or equivalents like bio or eco, on any product is regulated by food authorities.
First trimester ends at the end of your 13th week. Count 12 weeks, starting from the day of your last period. At the end of your 13th week you have started your 2nd tri-mester. Your first trimester ends at the end of week 12,and your second trimester starts at the beginning of week 13 and continues until week 27.
Actually the third trimester begins at 28 weeks. It does not really matter what you call it. But I go with 27 weeks because in reality you are pregnant for 3 equal periods of 13 and a 1/3 weeks (or 13 weeks plus 2+ days). That math will give you 40 weeks. So really at 26 and 2/3 weeks (or 26 weeks and 4/5 days) you are 2/3 of the way done.