Tumblr has this stupid habit of randomly turning safe search on. You should check for the little 🔒 on the end of your search bar to be 🔓 first.
I can reply and see myself in search, so I’m pretty sure I’m still ok. Thanks for looking out, tho!
Also! If anyone is on the iPhone tumblr app, the last update changed some things. It turned safe search on, and you now have to go to tumblr in the iPhone settings to turn it back on. Protip.