My current pregnancy was unexpected and my partner has really struggled. He has come a long way but it's still tenuous.
I decided to keep this baby and told him he could either be in or out but I have taken care to try and prepare myself so that I'm ok if I need to carry on alone.
I saw a counsellor to help me reach this decision and it helped so much, she was really great at helping me to consider every angle and option and navigate to a place where I could clearly see what I really wanted to do. She also helped me to work out a way to tell my partner.
I also have a teenager and she has been my greatest support and already a doting big sister. Your daughters may really surprise you if you do find yourself lacking some support in this.
That all being said, I have had a termination in the past so I'm not anti choice and that too was the right decision at the time.
I like to think that all women, given peace and support to consider this situation will always come up with the right decision, whatever that may be.
Just be kind to yourself.