"No follow up, can’t get urgent appointments"

I was last seen at the end of 2017 and taken off my immunosuppressants to get pregnant, I should be seen every 3-4 months but in 18 months no appointments have come through and nobody has followed up on my removal from medication or any of my routine health monitoring (lung function, cardiac echo, bloods etc), I had to request these to be completed via the gp. I now have a severe flare up of symptoms and need to restart my immunosuppressants to get this under control, despite multiple calls to the secretary I have had no response other then the helpline staff telling me I needed to go through the secretary. I’ve been sent an appointment for 6 weeks time when my disease is rapidly progressing and causing mobility issues!