Do you have rectal pain?
If Yes, how frequent are they and how much do they last?
How old are you?
Male or female?
This does not look like hemorrhoids or worms. This can be proctalgia fugax. This is episodic pain in anorectal region, which resolve spontaneously. Levator ani syndrome or Coccycodynia or Chronic proctalgia are the other consideration for this pain. If the pain is persistent or frequent or last for long it would warrant an active treatment. Following treatment is advocated;
1) Pelvic electrical stimulation,
2) Injection of botulinum toxin
3) oral clonidine
4) local nitroglycerine
5) Levator ani massage
Please read the resource for the further details;
It would be prudent that you are evaluated by your physician who would do an anoscopy and proctoscopy which are office procedures for the pain of this kind.
Please feel free for your follow up questions.