Pregnant with third child after MAP fail - confused

[Babyfairy0923]

Hi everyone,

I have just found out that I'm 4 weeks pregnant with baby number 3.
I already have very much loved 5 and 2 year olds.
The MAP failed so this pregnancy is a complete shock and I keep going back and forth on what to do, I have booked an abortion for 2 weeks time but I'm still feeling so confused and changing my mind on a daily basis.
My reasons for being unsure are- the extra financial pressures, and that we live in a small 3 bed house and worry it wouldn't have enough space.
Other small things worry me like will I be able to split my time for all 3 children, would they get enough attention and would one always feel a bit left out.
The baby stage also worries me as I find I'm so tired even with 2.
But in saying all that I have always liked the idea of having another and I come from a large family. I keep thinking about if I could live with myself if I have an abortion even though I know I would be doing it to provide a better life financially for the children I already have.
I haven't told my husband yet as he is against abortion and if I tell him there would be no choice other than to go ahead- I know how awful that sounds. He is an amazing father but he is more than happy with the 2 that we have and does get stressed out with money etc so was never keen for a third.
As you can see I'm extremely confused and any advice or thoughts/experience would be appreciated.