hi everyone, hoping someone can share some thoughts with me

we have just found out that our donor is no longer active and we have used up all our sibling sperm on our last 2 tx's
I knew this was a possibility but didn't really think it would happen
me and dh had a chat last night and both decided it was the end of our tx journey and we'd look forward to being a family of 3, however, dh woke up this morning and said 'i really think we need to have tx again using a new donor'

so now I am rather confused about what to do
It's so very difficult - is there anyone on here that has a family using different donors - i know it was commonplace a while ago - i just feel so confused. I had a false sense of security using the original donor as i know he produces beautiful, intelligent, text book babies

- baby spooks is an absolute dream and just assumed using him again would produce the same.
Now i'm worried that a new donor's baby (have bypassed the tx and gone straight to pregnancy in my mind

) may be not so good and i wouldn't love it the same and would compare it to baby spooks all the time. I was so comfortable using the original donor during my last 2 tx's that i didn't worry about anything at all, now i feel like i did when we first started our fertility journey

I can't have my husband's baby or our chosen donor's baby.
I'm concerned about the implications that having different donors may have on baby spooks and future children. Everything seems to have got very complicated again. Dh seems quite blase about it all, i just feel (for some unknown reason) that a baby by a different donor would seem like an outsider to our family unit.
We are very happy as a family of 3 although if sibling sperm was available I'd want to keep trying for another baby for as long as possible. I look at baby spooks and don't think it's fair on her to use a different donor but can't understand why I feel like this.
Any thoughts on using different donors would be gratefully appreciated.
love to all, from a very confused spooks