Can someone advise me re: delta 9?

I hope this is okay to post here. Long story short, I have extreme, intractable chronic pain 24/7. I use medical cannabis vapes on occasion to help me deal with it, but I'm not able to get it right now.

I'm seeing all these websites that talk about delta 9 as if it gives the same effect as regular thc products.

For example, a cookie that says it has 100 MG per cookie, and you're supposed to divide it into doses.

Anyways, is this stuff legit, or is it like CBD which in my experience had no effects on me? I'm in a great deal of pain, and just considering my options, but I can't afford to spend money on anything if it doesn't actually help. If anyone could advise me on this I'd be very thankful.

Edit: thanks everyone for the input. I decided to get a vape, and it's helping a great deal. I'm glad that I asked here.