I think your first port of call is definitely to stay off Google for 'stories' as that can lead you down a dark path!
The best thing you can do though is arm yourself with as much factual info on birth as possible from midwives/the Internet. What your body needs to go through, what's 'normal' and what might happen as well as all the choices you have. My trust had their own maternity webpage. It's easier to remain calm I found, if you know what's happening to you and why and also that you do have a say.
Give yourself time to visualise what your 'ideal' birth scenario would be and aim as much as possible for that but make sure you have some contingencies in mind and don't rigidly stick to that plan. This can help you feel more in control, even if things don't go as well; it helped me even though last minute we had meconium so there was no water birth for me!
Try and make peace if you can, with the idea of labour too, research pain relief if it's the pain that scares you, no one gets medals for going without, but in the end, I didn't have any and just kind of let my body get on with it, no shouting or screaming, very calm. It wasn't the most pleasant of sensations you'd want every day, but if you go with it, rather than fight it, your body will cope better.
There will be as much care given to you under the circumstances as can be, I've only heard praise for how midwives are working in the current situation so please try not to worry about that but don't be afraid to ask what the procedures might be - all knowledge is good for you.
Wishing you all the best for a lovely labour when the time comes