Found a way to orgasm!

So first my boyfriend fingered me and got me warmed up. Then he started to eat me out. Before the other couple times he did I couldn't cum mostly because I couldn't relax and my mind drifted off not because it wasn't good because I was worrying. I start to feel this amazing feeling in my uterus area i guess and everything becomes sensitive my legs start to shake i grab on to him and arched my back and I had this feeling like I had to pee which was what I was most worried about. I got myself to relax by closing my eyes and then I pictured one star in my head or a white dot and focused on it so I didn't think of anything else and bam. My boyfriend  said that my pussy overflowed and came down like rain haha