If 40mgs are giving you only threshold effects, you're doing something way wrong. Who knows how much you actually ingested, or even how much you loaded up. I would invest in a decent milligram scale (which you can find on Amazon for $30-40) and a quality delivery system. Then learn how to use it, starting with 15-20mgs and work your way up from there. And set & setting, my friend... very, very important. The more care you put into your preparations, the better your experiences will be.
Congratulations, though. Your fear will subside. If you're lucky, your wonderment never will. It's a rare thing you've just experienced. Not many ever go there.