jeremy,
is your baby sleeping through the night? does the little one have any health issues? Is mom still breast-feeding? sometimes these situations cause fluctuations in hormones that are at the root of mamy mommy problems. Post-partum depression does not show up right after birth and is often triggered by change in life-style, hormones, and SLEEP.
Also, it is not just mom's that have to adjust to a baby... daddy has to as well... men are often given the heavy responsibility of securing the finances of a family ... with little support.
btween 12 and 24 months baby grows physically... out growing a wardrobe before everything has been dirtied twice, learing that food is necessary and belongs in the mouth, and become SELF MOBILE. (3 months was sooo nice, deposit little angel in one spot and find them there 40 seconds later ... 20 months it is a constant race). Also, baby's brain is an incredible sponge, learning to interact with family, pets, toys, and their environment... and the tongue being the most sensitive "organ" everything ends up in that Big Mouth.
you have a lot in your hands and if your relationship is not strong no wonder you seem confused and lost. A good long talk with a soc-worker or other therapist would be a good starting point for YOU. Find out what you have on your mind. What is weighting down your heart. then work your way outwards...