I Had Shoulder Surgery On December 4 This Year After

I had Shoulder surgery on December 4 this year after which I got a rash under my arm and breasts on the side of surgery. I felt it was maybe a reaction to the oxycodone they gave me for pain and so I discontinued the pain mess and just took Tylonol every 4 hours for a few days till I could get a handle on the pain. I was given a topical steroid cream to put on the rash and it did disappear but the urine test showed I had a bigger problem of a staph infection so they put me on Levoquin. I am now at the end of the 7 day treatment of Levoquin and still am having temps of only 95-97 but oddly enough I get these flash fevers and still have swelling in my neck on the same side as surgery. Still feel weak and have problems when doing normal daily routines. Is it worth it to have another urine test ? Why fevers out of no where and low temps like I have never had before and what would cause the swelling in my neck when doing just normal activities. I
I am a normally healthy 62 year old women who has a positive outlook on life but needed shoulder surgery due to a shoulder impingement,swollen Bursa and torn ligaments.
I am most concerned about the fevers,weak feeling,low temps and mostly swelling in my neck.