Thats early for an induction. You won't even be overdue! Unusual to be induced unless overdue by a fair bit or if there is a problem. Hopefully if there is a medical reason you are being induced early its nothing too serious. Good luck
If the gel does not do the job then they may use something else to get things going. It can depend on how ready your body is to go into labour.
I've read many accounts of induction using gel and drip and tbh often it seems to be that labour contractions kick in and are more intense and painful than if you build up to them going into labour naturally. Natural labour means your body has time to prepare and you build up to the bigger contractions over time and also get a bit of a pain tolerance going on. Induction can often lead to needing/wanting strong pain relief earlier due to this. But then some women do it without
Means you will be on the bed and unable to move off it then if you opt for it. Be aware that epidurals don't always work fully or at all in some cases. This is not a common thing but it does happen. I've read womens birth stories where they say the Doctor tried a few times but could not get it to work or it only worked on one side or some such. Usually its fine and does the job, but be aware that on occasion it does not and you won't have many more options of strong pain relief then.
Try to relax about it all and hopefully it will aid your labour. Being relaxed makes all the difference. Working with the contractions and breathing thorugh them. I didn't have any strong pain relief for my labour and it really wansn't so bad
Gas & air, TENS machine and birthpool were great for me. Maybe consider some of those for pain relief also before an epi if you need/want them? Although if induced I am not sure you can go in a birth pool. If you have an epi you definately cannot. I'm sure you'll be fine anyways. Keep positive and don't clench your fists, keep palms open during contractions, it helps keep you relaxed. Also keeping mobile and moving helps lots.
Good luck