CONGRATULATIONS!!!! Listen kindly to others & then do what YOU want - it's your day!!! You won't be able to please everyone & everyone has their own ideas about what you should do - some ideas you might like, some will be ridiculous!
Have you set a date yet? There are tons of sites online that will help you with a list of things to do & the order things should be done like reserving a church, choosing dress, ordering invitations, registering, etc. It can become overwhelming, but DON'T LET IT! - take one day at a time! Again, congrats! ((I'm about to become a mother-in-law myself in January!)