Bruising and swelling can occur after filler injections, and Aspirin enhances bruising. It takes about 2 weeks to see the final result of your treatment. If you are not happy with the results at that time, please return to your doctor for assessment.
While bruising or hematoma after filler injections are very rare, it can happen as seen in your case. We don't know the timeline of your pictures or how long it has been since your injections, so we will not know your final results until the swelling/hematoma have resolved and you see how much effect is due to the remaining filler. if there is a volume deficit, it should be no big deal for your doctor to add a bit more filler. As for taking two Aspirin, that was the wrong thing to do. Aspirin thins the blood and will make the bruising and hematoma worse and take longer to heal. Did your doctor tell you to take Aspirin? If you have visible bruising, you may looking into VBeam laser treatment to help it resolve faster.
It does look like a hematoma. I would try and be patient because it will probably go away within a week or two. I would consider taking Arnica oral supplement to control bruising and swelling, and be sure and avoid blood thinner medications and supplements (aspirin, ibuprofen, fish oil, vitamin E, garlic) prior to filler injection.
Because of the swelling you developed in your lip after the Juvederm injection, it is impossible to say if the injection was uneven or not. It is not unusual to get some swelling after injection of Juvederm into the lips and sometimes one side will get more swelling than the other. You honestly need to wait about a week for the swelling to go down and then you will be able to judge the results better.