HA filler (& hyaluronidase) with MCTD?

I recently found out that I have MCTD but have been planning on getting HA filler for hip dips and butt for a very long time now (desperately need it). Timing worked out where I can now get it, but saw some scary stories about hyaluronidase, especially for those with any kind of CT disorder. Does anybody have experience?