Like how did his penis touch your anus? I don't need graphic details, but was it a quick touch, or was it rough rubbing for a long time?
There is no risk from fingering. If his penis just briefly touched your anus, and there was no friction, herpes wouldn't transmit. If there was friction, it could.
Has a doctor seen this?
The bump under your chin wouldn't be related to this.
If you do have herpes, you can have sex again, but let's cross this bridge after you see a doctor and find out what you have going on. It could be a fungal infection, or a variety of different things, and you need to let a doctor see it. If the doctor thinks it's herpes, make sure they do testing. They can culture it, PCR swab it, or do blood testing. If they do blood testing, make sure it's a type specific IgG blood test.