It shouldn't be stressful for you to get an approval from a mortgage bank, but it typically is with a big bank such as bank of america or chase.
If you need any additional help feel free to ask.
You can also get a per-approval to work with, where the mortgage person will get all your stated income but not actually run your credit until you come closer to buying a home. There are contingencies in the letter but it might be good enough initially to bid with. Your realtor can guide you to a reputable banker they work with.
Licensed Associate Broker
Accredited Buyer Representative
914 406 9023