aw sk there is absolutely nothing wrong with you hun, stop worrying that you are not normal! you completely are!
i never worried about whether i was normal or not even when i shut all the doors to our flat when i was trying to get leo to sleep without rocking him and sat in the pitch black hallway (all doors leading out of it were shut and it had no windows) for a couple of hours rocking myself lol lol lol dh thought it was weird but i needed to just calm myself! it had been a very very long day lol
hun i am going to have a newborn and a toddler and a dh going back to work 5 days afterwards and am having a c section! i am absolutely bricking it and feel overwhelmed already and she isnt even here yet! of course you feel overwhelmed hun you have gone from being responsible for yourself to being responsible for a small baby who doesnt really communicate their needs well lol and doing that on your own for the first few times is overwhelming!
look at the time in small stages instead of a whole day, i used to do it in the routine of sleep, eat, burp, change. sleep eat burp change. seemed to help me when i felt like i was out of my depth i just used to get myself to the next sleep which at first was every 2-3 hours and would congratulate myself with sleep, shower, food lol