I think i might have prenatal depression?

When my husband and I found out we were pregnant with our son we were thrilled! We were just moving into a new house, and it was right before christmas.. after trying for nearly 3 years. Now its much different. I am still very thrilled about my son but there have been a LOT of changes in our lives, excluding the pregnancy. I was having a lot of cramping the 1st tri so i quit my job. Husband now works long hours at 2 jobs. Took my 4 year old daughter out of daycare and now she is home with me 24/7 and is making me crazy, my mom is going through menopause and i can barely stand to talk to her, as we used to be very close, and my sister moved in with us. As if the lack of wasnt already enough, that makes it even worse. I cant sleep at night (obviously or i woldnt have time to write this) i feel like i can never get any housework done. I feel like my life has taken a 180 and i just want to break don and cry. At least I only have about 10 weeks left! Hopefully postpartum doesnt hit me!