M.H.
My brother and SIL did three rounds of IVF that failed. It's very expensive and physically and emotionally taxing. There are A LOT of ups and downs. The doctors were honest with them and they went into it knowing that their chances weren't great. However, my SIL knew people who had been successful so she was convinced it would work for them too. The medications she had to take cause weight gain and mood issues. The emotional roller coaster waiting for the results was almost unbearable. They switched doctors for their third and final round. That doctor refused to do any additional rounds unless they used donor eggs, which my SIL didn't want to do. For one of the rounds, I don't remember which, she was "pregnant" (I use that term loosely) for a very short time, but her hormone levels were never near what would be considered a normal, viable pregnancy. So, it didn't work for them and strained some relationships along the way, but they do have friends for whom it worked. If you choose to go that route make sure you research the doctor and the clinic and get a good one that comes with personal recommendations and references. The doctor/clinic should have very high standards and tight rules about their procedures. Ex.--limit the number of fertilized eggs that are implanted, limit the number of rounds they will attempt, etc. Also, do you know the possible reasons for your inability to conceive thus far? That information might be helpful in your decision making process. In my brother and SIL's case it was probably related to the quality of her eggs and her hormone levels, thus affecting their chances. It was a very difficult time in their lives.
Fast forward several years, in October they witnessed the birth of their newborn adopted daughter. She is 8 months old and thriving. My SIL is over the moon happy. However, that wasn't easy either. It also took a few years and at least twice people attempted to scam them. They came very close to giving up. But we have a happy ending and their daughter is perfect for them; almost like the wait was meant to be.
I'm sorry to be so negative, but that is my family's realistic story. Good luck whatever you decide!