Fed up !!!

When I thought everything was going so well on the Sulfasalazine

I just started 4 th week on full medications and my left neck glands have come up initially thought I’d cricked my neck but have had a high temperature and headache so dr recommended to stop taking them for the time being I do have and infected wisdom tooth but that’s on the right side and neck glands on the left ! So dentist suggested another dr appointment and waiting on Rheumatology nurse to call me back Tuesday to chat about going forward ! Could these be the medication making my neck glands tender ? Hope everyone is ok x