I got divorced when youngest was 1, it was a relief to be a single parent rather than married and doing everything without any help, but not able to ask family for help because it would show him up for being a lazy, poor parent and partner.
Being a single parent is hard, you need to build up support networks through baby groups etc, so that on those days the baby won't stop crying there us someone to have a cup of tea with, and chat, and it won't seem so bad.
Money is a worry and childcare is expensive, but you can qualify for tax credits to help depending on salary.
Ultimately you need to think would you always regret not having kids, or can you let it go.
In your shoes I'd have a baby, but then I have 2 kids and now 3 step kids and I'd have loved more.
Good luck with your decision making X