Headaches and other symptoms of weaning

I made it to just shy of 14 months. I appreciate all the tips along the journey as I went through a nursing strike that led me to become an EP at 5 months. It's been a week since my last pump. I reduced it gradually from June to now, with my last being one pump a day. I have splitting headaches on one side of my head, along with a stuffy ear sometimes. Has anyone had painful headaches? my kid headbutted me and caused my lip to bleed. So I'm not sure if this is from that (almost 2 weeks ago) or quitting pumping. I've also experienced rage like no other, simple things made me upset. I've gone through nausea and extreme tiredness, so I'm wondering if headaches are just the next step. i hope this ends soon