Should I've gotten a genioplasty instead to look more natural and feminine? (Photos)

 First, you are very early in your post op healing timeline. It takes at least six months before your chin swelling goes down enough to determine if you like the result or not. Second, I personally think you look great in your post op picture. Also because you were smart enough to have an implant and not a genioplasty, If you ultimately don't like the result, then you can just have the implant removed.

 HI, 1 month post-op is a bit too soon to make a final assessment of the outcome.  It would be helpful to know the chin implant material, placement method (under the chin versus inside the mouth), style and thickness of the implant.   If you have a reasonable (aesthetically shaped) silastic chin implant of a reasonable style and thickness...it might be best to wait a few more months to allow the area to full heal.  If you have a very large sized implant, that's thick and has a wide front facing element...this could explain your reaction at this time.  In that case, the implant can be exchanged for a smaller one. You should discuss your feelings with your chin implant surgeon.  I have performed many facial shaping procedures, including Chin Augmentation with dermal fillers or silastic chin implants, for over 30 years.  When the chin is weak, this creates an imbalance making the nose appear larger, the mid face top heavy, the lower face looks short, de-emphasizes the lips and allows early formation of a "double chin".  
 Proper placement of a silastic chin implant adds forward projection to the chin thereby creating harmony and balance to the lower face.  Using the same incision, liposuction can be performed to reduce the fat and further shape the neck.  Excess skin, from below the chin, can also be removed through the same incision.  
 I have found that placement of a silastic chin implant, through a small curved incision under the chin (also allows excess skin removal) to be very safe, quick, highly effective and far less invasive than a sliding genioplasty (requires extensive tissue dissection, bone cuts and placement of metal screws and plates to secure the cut segments of bone).  I perform chin implant surgery in 30 minutes or less, often using a local anesthetic alone.   Which is better, chin implant or sliding genioplasty.  We place silastic chin implants through a small, curved incision under the chin using local anesthetic in 30 minutes or less.  This is "far" less invasive than a sliding genioplasty that requires cuts in the bone with plates or screws.  For that reason and because the aesthetic results are so good with a properly placed silastic chin implant of the correct shape and size...in my humble opinion there's no comparison.  The chin implant is quicker, easier, with far less surgery and healing, less unwanted side effects with results that are highly effective and reliable.Hope this helps.