It will be hard but there's is nothing u can't do. Life is about adjusting as we add and lose things in our life. Of course it won't be a breeze but u will be ok.
You'll be okay. You'll adjust. I'm having my 5th baby. All my kids will be under the age of 5 when this ones born. I understand but God wouldn't give us more than than we can handle.
Congrats! Ive heard of people getting pregnant naturally after ivf. Might be a girl if you are more sick this time. I have a 3.5 year old, an almost 2.5 year old and I'm due in a week with number 3. My first two were boys and I was barely sick. I have been very sick this entire pregnancy and even had to take medicine for a while because of all the vomiting. This one is a girl. If you could train your boys to sleep through the night before baby comes that would help. I try to have the "baby" sleeping through the night before new baby comes. My first 2 are 15 months apart and that was hard but its fine now. I'll have 3 under age 4 when baby arrives. You'll do great. :)
It's gonna be OK... It's actually not as hard as you think... I just think that you're overwhelmed right now...