Most of the signs can be AF
and like someone else said every pregnancy is different which makes it fun for the mom to figure out if she is PG or just going nuts .. just try to enjoy your life as it is now and think about Caitlyn in this situation ..she has your full attention atm but if your PG ..she will loose some of it once bub comes along ..
Its something lots of mothers have to deal with and most of them make it through ..but its hard . I for one would make sure My 1st baby knew they were special even if another baby comes along ..you mentioned before Caitlyn is jealous when you hold other babies ..someone once told me that its good to get them a lil dolly so they can pretend to help with the baby ..makes them feel needed ..
As for a house the economy sucks every where atm so theres no win win situation ..the only diff in your case is you will have rent, cars, bills, and other stuff to pay so may be a bit tight ..but as you said as long as the babies have everything they need its ok right ?