Shocked and worried

Hey! Anyone else just had a baby last year and now found out to be pregnant again? I have two older ones (10 &8) with thier dad and then recently had a baby last October who is 1 in three weeks and we have just found out we’re expecting another, my finance is over the moon but I am absolutely terrified to have 2 under 2. I found it really hard going back to the baby days but we had our own little baby together and that was enough for me… but FOUR!!! We were on the fence to have another but we always said the end of next year would be the earliest and even then I was like 🤯 We’re obviously keeping it however it’s taken ALOT to get my head around and I’ve had my head up my arse since I found out. Anyone else in a similar position?! I just want my baby to stay my little baby a little longer, not be a big sister already. My heart breaks 💔 but I know she’s going to have a little bestie forever ❤️