The fact you asked if you need IP suggests that you know something is wrong enough that you need urgent professional care. If you know you need urgent help, then IP is the way to go.

As I always say, if you really don't know if you should stay or go, try the hospital anyway. They'll decide if you need to stay or if you're in need of a different level of care, such as PHP, IOP, etc. Just be honest with them so that they can help you. This is your life and you deserve the best.