Letting go of resentment

Looking for a place to share anonymously to a compassionate group!
​Like a lot of you, been TTC over a year no success. Eating healthy, exercising, cutting out the wine and coffee I enjoy, taking the best prenatals I can find, going to accupuncture, using Glow, following all the advice, etc etc. Have had close friends doing the same who have experienced heartbreaking miscarriages.
Meanwhile... my irresponsible-, drug-using-, smoker-, in a relationship with a drug user-, currently in rehab that my husband and I are paying for- sister in law... you see where this is going... Yeah, she's pregnant. 
​Me- intensely angry, sad, and resentful.  Want nothing to do with her. Haven't spoken to her. Don't plan to.
​I'm sure I'm in for a roller coaster of emotions to come but this is where I'm at right now:
​-her pregnancy has nothing to do with  my husband and I or our potential future pregnancy  
​-I don't have to be happy for her  
​-I'd rather spend my energy on celebrating the happy things in my life!
​-My husband and I are going to be fine, we have a great life, we will share it with a child one day, whether that be through our own pregnancy or adoption if that's where we end up, it will happen 
​-In a strange way, this devastating moment is teaching me that we can and will get through whatever is thrown at us in our journey of TTC, of life in general.
​Life can be challenging, unpredictable, and unfair.
 
​Ladies, we are all much stronger than we give ourselves credit for. We can let go of resentment. We can be happy. 
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​Wishing happiness, peace, and love to all of you amazing women. You deserve it.