| Date | Months | Weeks |
|---|---|---|
| January 20th | 0 months | 0W,0D |
| February 20th | 1 months | 4W,3D |
| March 20th | 2 months | 8W,3D |
| April 20th | 3 months | 12W,6D |
| May 20th | 4 months | 17W,1D |
| June 20th | 5 months | 21W,4D |
| July 20th | 6 months | 25W,6D |
| August 20th | 7 months | 30W,2D |
| September 20th | 8 months | 34W,5D |
| October 20th | 9 months | 39W,0D |
| Date | Weeks | Months | % | Notes | |
|---|---|---|---|---|---|
| January 20th, 2013 | 0 | 0 | 0 | LMP | |
| January 27th, 2013 | 1 | 0.2 | 3 | ||
| February 3rd, 2013 | 2 | 0.5 | 5 | Average Conception (± 2 days) | |
| February 10th, 2013 | 3 | 0.7 | 8 | Zygote | |
| February 17th, 2013 | 4 | 0.9 | 10 | ||
| February 24th, 2013 | 5 | 1.1 | 13 | Embryo | |
| March 3rd, 2013 | 6 | 1.4 | 15 | Heart is beating | |
| March 10th, 2013 | 7 | 1.6 | 18 | Head develops | |
| March 17th, 2013 | 8 | 1.8 | 20 | Limbs can move | |
| March 24th, 2013 | 9 | 2.1 | 23 | Toes form | |
| March 31st, 2013 | 10 | 2.3 | 25 | Fetus | |
| April 7th, 2013 | 11 | 2.5 | 28 | ||
| April 14th, 2013 | 12 | 2.8 | 30 | Fingernails develop | |
| April 21st, 2013 | 13 | 3 | 33 | Start second trimester | |
| April 28th, 2013 | 14 | 3.2 | 35 | ||
| May 5th, 2013 | 15 | 3.4 | 38 | Bones develop | |
| May 12th, 2013 | 16 | 3.7 | 40 | ||
| May 19th, 2013 | 17 | 3.9 | 43 | Fat accumulates | |
| May 26th, 2013 | 18 | 4.1 | 45 | Hearing | |
| June 2nd, 2013 | 19 | 4.4 | 48 | ||
| June 9th, 2013 | 20 | 4.6 | 50 | You can feel movement | |
| June 16th, 2013 | 21 | 4.8 | 53 | ||
| June 23rd, 2013 | 22 | 5.1 | 55 | ||
| June 30th, 2013 | 23 | 5.3 | 58 | Fingerprints form | |
| July 7th, 2013 | 24 | 5.5 | 60 | ||
| July 14th, 2013 | 25 | 5.7 | 63 | ||
| July 21st, 2013 | 26 | 6 | 65 | Start third trimester | |
| July 28th, 2013 | 27 | 6.2 | 68 | ||
| August 4th, 2013 | 28 | 6.4 | 70 | ||
| August 11th, 2013 | 29 | 6.7 | 73 | ||
| August 18th, 2013 | 30 | 6.9 | 75 | Eyes open | |
| August 25th, 2013 | 31 | 7.1 | 78 | ||
| September 1st, 2013 | 32 | 7.4 | 80 | ||
| September 8th, 2013 | 33 | 7.6 | 83 | ||
| September 15th, 2013 | 34 | 7.8 | 85 | ||
| September 22nd, 2013 | 35 | 8 | 88 | ||
| September 29th, 2013 | 36 | 8.3 | 90 | ||
| October 6th, 2013 | 37 | 8.5 | 93 | Term | |
| October 13th, 2013 | 38 | 8.7 | 95 | ||
| October 20th, 2013 | 39 | 9 | 98 | ||
| October 27th, 2013 | 40 | 9.2 | 100 | Estimated due date | |
| November 3rd, 2013 | 41 | 9.4 | 103 | ||
| November 10th, 2013 | 42 | 9.7 | 105 |