my theory would be that you're getting some things sorted & that then the deeper stuff starts to appear that needs to be addressed. If it's coming in as intrusive self harm thoughts, then something maybe trauma needs to be worked on eventually imo.
my pdoc says she sees this happen with me, once i get something sorted out with my kids problems, i finally have space to see something in myself that needs help.
Be sage, don't let those thoughts control you. go to ER if it get's really bad.

i've recently had resurfacing intrusive self harm thoughts & think i may have conquered or they subsided on their own, willing to talk to you about it if you want, but maybe not if you're in a fragile state.