I've been dealing with refractory epilepsy in my young dog for several months now. One day he was fine and the next someone flipped a switch somewhere and he started having multiple cluster seizures every week. Grand mals in the double digits and if you count the facial tics and eyelash flutter seizure activity then he was having dozens of seizure each day at one point.
Take a deep breath, get him to the vet when you can, and see what they say. There may be a treatable medical cause for the seizures or there may not be. Gotta play it by ear.
Most dogs respond beautifully to the anti convulsant meds. Many have lived long healthy lives on them.
I have been using ocular compression for my dog, and have seen wonderful improvement. I've used it to stop seizures, prevent seizures, and finds it greatly reduced postictal behavior. It's a good skill to have.
Now, you don't need to make this decision now, and the truth is you shouldn't make this decision now. Not while emotionally raw and exhausted. Not before finding out what the vet says.
But even on medicine, it's normal for the dog to have the occasional seizure. And that means the icky stuff that goes on with it like losing control of the bowels and bladder.
Seizures are tough on the dog mentally IME. They become pretty confused and scared. There have been times my guy has come out of it and wanted to climb in my lap. We both ended up covered in urine and feces. It's disgusting, yes. But floors can be cleaned, clothes can be washed, showers can be taken, and baths can be given.
There is nothing wrong with deciding that you can not handle this type of heavy stuff, but it is something that you will have to consider at some point and make the best decision for the dog.
When you go to the vet, make sure you explain that you are very far from an emergency vet. Lots of vets won't put dogs on meds for such infrequent seizure activity (3 months apart) so you may need to let them know of your situation so they can give you valium. If the dog were to go into a seizure and not come out, rectal valium will stop it. Been there, done that, got the t shirt.
I had started a thread entitled "grand mal seizures" on the health and wellness forum here. Lots of the wonderful posters here have shared their experiences and brainstormed for me. Lots of ideas on management options were mentioned. Both conventional and nonconventional. Some of it might help you out.
Best of luck to you both.