i can kind of relate, this is my 4th baby and he was/is very much wanted but the pregnancy in the 2nd tri really affected me emotionaly, i was a totaly mess most of the time, money wise we are teh same, we dont earn lots each month but we do earn enough to get by if we are careful, the kids do activites after school every week night and that along with pocket money and inviting friends over was killing us, so in the end i gave them a choice, after sdchool clubs, or pocket money, they wanted teh after school clubs so now they do jobs for me around teh house and that pays for them to go out and have there fun.
I also went loopy on my hubby, i accused him everyday of having affiars, of lieing to me, of not loving me etc, i really went rock bottom as far as my self esteem goes.
But since getting to the 3rd tri its eased right off and i can look back now and see how stupid and crazy i was being. (not that im saying your stupid or crazy! lol)
I do think its hormones, i didnt have any emotional problems in my other pregnancies so i didnt expect to with this one, so when it happend it hit me hard and i was very confused.
Just remember each pregnancy is diffrent, hopefuly it will pass for you soon
x