Just a suggestion.
Having tutored, mentored and helped writers for a few years I/we've found a few things which have helped those of us (writers of historical novels) who felt overwhelmed.
1. Have a cracking good story you want to tell.
2. Get the period fixed visually.
Visit as many places as possible, villages, houses, castles etc of your time period.
Next best is to use DVDs and the web. As you research get into museums, art galleries, antique shops, places where people reenact your period. Get the pictures in your head.
3. Surround your writing place with postcard reproductions of buildings, paintings of people in the right clothes, countryside views, and a map, a calendar and weather for your year. (All available from the time and date website.) Remember to get the moon calendar as well.
4. Know your MCs. Write a Day in the Life of each of them. Know what they wear, how they speak. Spend one day living without electricity, piped water and other mod cons. to see what becomes important. Try to live as your characters would have for a day, try cooking, eating and working their way.
All this should create in your writer's mind the world of your characters as you see it. It won't be the same as, say, my 17thC or 2000BC but, because you believe in it, it will ring true to readers.
And
5. You will always make mistakes but you can forgive yourself if you have done the research, and tried to get it right.
That means more than using google!
Edited to add
Er...what is that weird symbol at the top of the message?
