Dont worry yet
It is almost impossible to accuaretly evaluate your nose this soon after surgery. You are at best 10% healed. You will see many changes over the next 6-12 months. Just be patient and remember how much swelling you have right now.
Asymmetry two weeks after rhinoplasty often times is the result of swelling.
At two weeks you have a lot of remodeling to do is the swelling subsides. Don't get to focused on the present appearance as it will change significantly over time.
Asymmetry and rhinoplasty
First, no nose is perfectly symmetric or perfectly straight. Second you are probably very swollen and you have to give it time to settle down.
Yes, most likely it is the swelling. Swelling may take up to a year to resolve. In my answers elsewhere where I advise a patient and describe a nasal massage post-rhinoplasty. Hope this will help.
Early anxiety after a rhinoplasty
Swelling will play many tricks on you. You are very early in the post operative recovery period after a rhinoplasty. Give it 6 months before you start to judge the final result.
Asymmetry after rhinoplasty
Asymmetry is very normal 2 weeks after a rhinoplasty is normal. It will take a few months to really be able to see your result. Post-op swelling will change daily and it does not go down evenly. As far as the suture goes, I am sure if you speak to your doctor, he/she will put your fears to rest. A suture breaking through after a rhinoplasty is also normal, but you need to speak to your doctor.