@HanaDumii, there really isn't a physical hospital that you can go to on the map. The hospital is only accessible by either going into labor or by choosing the Doctor career path. It sounds like your Sim is stuck. 🤨
You can try to reset you pregnant Sim by doing the following:
1) Bring up the Cheat Box by pressing the "Ctrl" button + the "Shift" button + the "C" button at the same time on your keyboard.
2) Put your cursor in the Cheat Box and type resetsim "First name" "Last name" without the quotes. So for example if your Sim is Bella Goth, then you would type "resetsim Bella Goth" with out the quotes and then press the "Enter" button.
Your Sim should be reset and you hopefully can now send them to the hospital! 🤞
However, if you play with Mods or Custom Content (CC) this could be why your Sim can't go to the hospital. It doesn't matter if your Mods/CC have noting to do with pregnant Sims. EA just released an update patch to the game, and every time they patch the game Mods and CC can become outdated. The people who create Mods and CC have to update their creations to work with the new patch, and then you would have to get the updated Mods/CC and replace your old broken ones with the new updated ones.😞
If you use Mods/CC then you can check to see if that is the problem by doing the following:
1) Remove your Mods folder to the Desktop
2) Delete the localthumbcache.package file in the game folder
3) Fix your game in Origin by Logging into Origin and go to your Library. Right-click on The Sims 4 and choose the option to "Repair Game" . Wait until Origin fixes all of your packs, and not just your Base Game.
Now, when you turn on your game, it will create a new Mods folder that will be empty.
Check to see if your problem is fixed in your game.
If the problem still occurs, then outdated Mods/CC isn't your problem.
If the problem is fixed then you have to go through all your Mods/CC and find the broken item or items and get the new versions of those wherever you got them in the first place, once the creator updates that item. If you have a lot of Mods or CC, then it is easiest to do the 50/50 Method to find the problem item(s).
I hope this helps you, but if the first thing doesn't work and you don't use Mods/CC, or if neither suggestion works, then please update us so we can try to figure out what is happening in your game!🤔 And you can also update us if any of these suggestions do work! 😃