Abit nervous and would like some advice from the glow family!

So I currently have a little boy that is 15 months old and I am pregnant with a little girl due 4th Jan. I am really worried about when she is born.. I might be over thinking it, will I have enough time for my son? Will he get jealous and start to hate me? How can I divide my time equally and still do the house work etc? Is there any mums out there that have similar situations? I would really like to hear your advice and how you deal with every day life.. it's something that has been worrying me for a while I just didn't want to speak to certain people about it as I will get judged so it's best to ask the most honest and reliable people, you ladies on glow!