6 weeks after rhinoplasty. Is this swelling or is my nose crooked? (Photo)

I am sorry to hear about your issues following Rhinoplasty
surgery. Looking at your photos it would appear that your tip is deviated.
Seeing before and after base views would be helpful. In general swelling can
cause the appearance of deviation. An in person exam would be helpful as well.
It would be pure speculation to offer an explanation as to why your nose is
twisted now. I would advise you to first
check back with your surgeon to be sure.Good luck and I hope this helps.Dr. Wayne

Generally speaking, it can take 6 to 12 months to completely heal after surgery. Please keep in touch with your surgeon or his/her clinical team to discuss your ongoing concerns.

SInce you are only 6 weeks post op this takes some time to heal. The swelling could be a few months. if this this concerning you then you need to speak with your doctor.

You are six weeks postop from your rhinoplasty and still have swelling throughout the nose. As you continue to heal, the swelling will gradually decrease. Certain areas of the nose, such as the nasal tip, are known to be swollen for a longer period of time than the other areas. This can sometimes take up to a year for the swelling to completely subside, especially in patients with thicker nasal skin. Be patient through this process and make sure that you followup with your surgeon regularly while you are healing. 

A little tough to say for sure, but after 6 weeks, it would be hard to credit all of that to swelling. Only your surgeon knows for sure what was done, so that is the best person to ask. Marked improvement in profile, definitely.

From what I can see, it appears you might have some tip asymmetry.  You have a very nice profile view.  Consult with your plastic surgeon.