Tailbone pain Postpartum

I’m 5 months postpartum and I still can’t sit without pain. I have to slouch to keep the pressure off of my tailbone. I had a vaginal delivery with very minor tearing. Is anyone else experiencing this? It’s agony to ride in a car and painful when I get up from a chair at work. I lost my insurance currently so I can’t discuss this with my GP. Just looking for tips on how to deal with this as I’m already predisposed to back issues and the slouching certainly isn’t making it any better!