Mom guilt

So we found out that I’m pregnant with our 3rd baby. Our oldest is 8yrs and younger is only 15 months. This pregnancy was unplanned (failed IUD)- when we found out the IUD was in my cervix and not in place and I was in fact already pregnant we decided we would love this baby like our other two. It’s been a few weeks since we found out and I am suddenly overcome with negative emotions. I feel as if this is not fair to our other children. Will we have enough time and attention to go around. We also only have 3 bedrooms (including mine & my husbands) so that means someone will end up sharing a room... I also worry if something were to go wrong this pregnancy what would my children do since I’m a SAHM. Please tell me someone else is going through this and it goes away!! The mom guilt is sooo real. I just always want my children to feel loved and as if they have my time and attention....