Depending on where you live you might be eligible for your state specific expanded medicaid program. I couldn’t find a website that will let you look up what your state calls your plan but https://www.medicaid.gov/state-overviews/state-profiles/index.html will let you know if your state has such a program (all but 10 states have an expansion program). If your state does have an expansion program do a search for “[STATE] + medicaid expansion” to find your state run government website and you can see the eligibility requirements. The common requirements are that you don’t qualify for other assistance (medicaid and SSDI) and that you make less than 138% of the federal poverty level ($20,783) so it sounds like you might qualify.
I was able to enroll in my states medicaid expansion program and get an appointment at an informed consent clinic that accepted the insurance. Both T and E are covered under my states plan but I don’t know if that applies to all states.
Last time there was a discussion about arm pillows I bought one of them. https://medcline.com/products/shoulder-relief-pillow
I don’t use it as they depict but I do use some of the pillows.