I just ran a quick Google & there are plenty of sources out there. One I found was:

https://www.addictions.com/heroin/sh...in-withdrawal/

I just cut & pasted the first one I opened, so it might not apply to you directly. There's a phone number at the top of the page, however, for information. If you call that number they might be able to give you information more relevant to your specific situation.

I'll try not to lecture, but if you do use again there's some crap out there now that can kill you quick...& in small amounts. I'm sure you already knew that, however. Good luck.