I don’t know if I can handle…

Well, here I am on my Christmas holiday and I just found out that I am pregnant – again. I am a mother of a 7 year old (from my first marriage) and a 15 month old form my second. Since the baby was born I had my period ONE TIME – at the beginning of December. And wouldn’t you know it, I got pregnant again! I just don’t think I’m up for it! I mean I love my children and my husband does too. He took in my older son as his own and then when we had our Baby it changed his life! He says that he never knew he could love someone SOOOO much. He is truly a wonderful person. The problem is me. In the last 6 months I have not been well. I started working form home, which I have done in the past, and he had two back surgeries and I just – well over did it a little. I started drinking TONS of coffee, dropped LOST of weight (I was 205 when I had the baby and am now down to 130!) The stress of taking care of the new baby, my husband, working and juggling life made me develop a stomach ulcer and some anxiety. I’ve been on medication and Xanax for stress for the last two months. And now I’m pregnant.
Not very far along – 2 weeks at this point. But the meds I have been taking are NOT recommended for pregnant women or that are trying to get pregnant.
My husband says that he’ll support me with what ever I want to do.
We were planning on moving in a year, I suppose we still could, but it would be harder.
The real issue is if I think that I can handle. I feel so selfish!
I’m already waking up sick. I’m feeling like I just want to crawl in a hole. I’ve never been a depresses person – but in the last few months I have been a wreck!!
What do I do here ladies? I LOVE my children! I know that WE can handle another baby. But I don’t know if I can – at this point.
Help!!