Yes it is a side effect but most physicians aren’t aware of this because it’s not reported often . I have been through this for the past two years with lumbar steroids injections and at first i was really worried and then i connected the two because it was exactly 15 days after each shot . My gynecologist put me through all the tests ,ctscan , D&C ,ultrasound and lastly after the last one a biopsy. All came back normal . Then i found an article on line to confirm my belief so i took it to our pain clinic and showed the dr that does the back injections and he said he was aware of it but not that common . So i asked him how serious it is to bleed after and he said if all the tests are clear it should be ok . It’s all about the quality of life . I am having another shot done in April so what my gynecologist has put me on estrogen cream 1gram twice a week to see if that will help to counteract the bleeding . However this will be the last shot for me as i am 77 years old and i dont want to keep getting all the other things done like biopsy s ect . Also the estrogen cream comes with other problems .hope that helps . good luck