Mortgage loan approval: Part-Time Income?

Hi! I am trying to start the process of getting approved for a mortgage loan. My husband works full time (same job for over 2 years) and I graduated from college this past summer. I work part time as a Registered Nurse at a local hospital. Part time at this hospital is a regularly scheduled 45 hours biweekly (as stated in our union contract). Since this is my primary job (not seasonal or supplemental) and I have a guaranteed amount of hours and hourly pay rate, can we use my income right away for qualifying? Or would I need to wait two years like I have read about for some part time jobs? Thank you for your time!

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