Congratulations, having a baby is sooooo rewarding and special. your ex is losing out and may realise it at some point but if he doesnt don't worry you may meet someone who wants to be a father to your children like i have. i was single for a while but now we are settled and a happy family of four 
on the nights when it all feels too much, the baby wont sleep or you're feeling the loneliness then just remember that isnt how your life will always be and make the most of every moment with your baby because they grow up soooo quickly. If your friends/ mum whoever (someone you trust) offers to help dont feel like you have to say no, even if they just wash up for you or let you sleep for an hour take the help because it is hardwork having to be responsible for someone elses life 24/7 is a hard job but dont let me put you off. when you feel your baby in your arms for the first time you will know how special it is to be a mother - when your baby is staring contentedly into your eyes whilst feeding you will know - even though she/ he cant tell you in words, you will know that they love you and you are their whole world, they depend on you for everything and are amazing!
This is so nice it almost made me cry and i had to share!!!
Before I was a Mum -
I slept as late as I wanted and never
worried about how late I got into bed.
I brushed my hair and my teeth everyday.
Before I was a Mum -
I cleaned my house each day.
I never tripped over toys or forgot words to a lullaby.
I didn't worry whether or not my plants were poisonous.
I never thought about immunisations.
Before I was a Mum -
I had never been puked on.
Pooped on.
Spit on.
Chewed on.
Peed on.
I had complete control of my mind and my thoughts.
I slept all night.
Before I was a Mum -
I never held down a screaming child
So that doctors could do tests.
Or give injections.
I never looked into teary eyes and cried.
I never got gloriously happy over a simple grin.
I never sat up late hours at night watching a
baby sleep.
Before I was a Mum -
I never held a sleeping baby just because
I didn't want to put it down.
I never felt my heart break into a million
pieces when I couldn't stop the hurt.
I never knew that something so small
could affect my life so much.
I never knew that I could love someone
so much.
I never knew I would love being a Mum.
Before I was a Mum -
I didn't know the feeling of having my
heart outside my body.
I didn't know how special it could feel
to feed a hungry baby.
I didn't know that bond between a mother
and her child.
I didn't know that something so small could
make me feel so important and happy.
Before I was a Mum -
I had never gotten up in the middle of
the night every 10 minutes to make sure
all was okay.
I had never known the warmth,
The joy,
The love,
The heartache,
The wonderment or the satisfaction
of being a Mum.
I didn't know I was capable of feeling
so much before I was a Mum.