Hard stools caused damage to my anus. How to heal it?

Hello doctor,

I did not feel the urge to pass stool for two days. Yesterday morning (day 3), I had the urge to pass stool, but I was not able to as I guess my stool had become too hard. In a state of panic, instead of taking a stool softener, etc., I pushed way too hard for way too long. As a result of which I was able to pass stool, but unfortunately ended up causing damage to my anus. I was in pain all day long. I had difficulty in sitting and had to spend most of the day lying down.

In the evening, I again had the urge to pass stool. This time I was able to pass stool easily without any hard pushing. The same thing happened today morning. As evident, I no longer have difficulty in passing stool, but due to hard pushing yesterday morning, I seem to have caused some damage to my anus. It is a bit better now than it was yesterday morning, but I am still experiencing a lot of pain and also have trouble sitting.

Could this be anal fissure or inflammation or something else? What sort of ointment or cream can I apply to heal my anus quickly? What can I do to ease the pain?

Thank you doctor,

Can I use Candid B or Lignocaine? Do I need to take a stool softener as I can pass stool without too much difficulty? Finally, does lactulose have any significant side effects? I am going to travel abroad for a few days from tomorrow and want to avoid further complication.