I followed your injection instructions to the letter
Get a medic to look if still concerned
15 Among the various nanoparticle types, lipid-based nanoparticles, such as nanoemulsions, solid lipid nanoparticles (SLNs), and nanostructured lipid carriers (NLCs), may be suitable to solubilize poorly water-soluble drugs 16 due to their rapid uptake and biodegradation, low toxicity, absence of a burst release effect, and easy scale-up process
It may help lower core body temperature, which is a key biological signal that it is time to sleep
Evidence-based recommendations for treatment with methotrexate in rheumatic disorders
Inspecting the site for any signs of infection, irritation, or problems that would contraindicate injection at that location