Hi J.,
It is quite a feat being a stay-at-home mom. After my son was born (he is now 2 years old), I quit my job and stayed with him for a year. I don't know about you, but I started watching soap operas (I never used to before), and time just used to fly (with the endless breast feeding, house cleaning, feeding baby,etc). We also had very few friends in the area, and I felt I very lonely, and even a little depressed. My son was also breast feeding till he was a year old, and during the days he kept feeding every 10-15 minutes. Add that to sleep deprivation, and you can see that I was a mess!
One thing I did notice were changes in sleep and eating schedules during the milestones as well.(when he turned 1 month old, 3 months, 6 months,9 months, a year,etc.)
But first check if your baby has any signs of an ear infection. Lying down will aggravate the pain, and if you lightly press on the small flap in front of his ear (they call it the tragus), she will yell if it hurts. It is also usually accompanied by high spikes of fever. I would advise calming her down when she screams (I don't believe in always just leaving a baby to calm themselves down). Maybe hold her in your arms, while rocking, singing soothing lullabies,etc. (and even lightly seeing if she rubs her ear during this time). My son also started the routine of drinking warm milk an hour or so before bed time..
Friends used to tell me to just survive till the baby becomes 2 years old, but I've realized that each stage has its own challenges( and rewards). My son (I only have one child) is now running all over, and spouting the funniest things, but I know that first year was quite a challenge.
Good luck!
Susan