The CDC recommendation is that folks who’ve had COVID-19 should still get vaccinated. https://www.cdc.gov/coronaviru...ov/vaccines/faq.html
People with weakened immune systems are at increased risk for severe disease. https://www.cdc.gov/coronaviru...ying-conditions.html
Although it’s true that there is limited safety data specific to immunocompromised people, we sure know how dangerous COVID-19 is. I’d get the vaccine without hesitation in your circumstances.