After Rhinoplasty my nose is not straight. Will it eventually straighten in a few months?

 It's important to wait at least a year before undergoing any revision rhinoplasty, if the nose is still crooked at that time. There's is still swelling left in the nose right now,so be patient  and follow up with your original rhinoplasty surgeon

Swelling after rhinoplasty requires several months to subside.This does not mean that after swelling goes away, that your nose will be straight.It is important to be patient and allow the swelling to resolve, and then to reevaluate the results carefully.This should likely take 9 months.  Return to your surgeon at that time and carefully analyze the results together.

You do not state how long ago surgery took place.  Swelling will take 3-6 months or longer to go away, so try to be patient.  If it remains deviated after 1 year of healing, then it is likely permanent, and revision surgery would be appropriate.  Keep in mind that massage to try to straighten the deviation can be helpful in the first few months after surgery.