what are the chances of getting pregnant...

I was with my boyfriend the other day and I'm a virgin. I'm familiar with the basics of getting pregnant and I always over think about everything so, I need help...We were fooling around, but he never penetrated me at all, he just rubbed it against the outside of my vagina. He said that there is a chance he had precum on the tip, but he stated that he peed 3 times before our date and had not ejaculated since. I freaked out after I went home because I read somewhere that precum contains enough sperm to get someone pregnant. Before I went to work, I went to Walgreen's and bought a Take Action pill. I took it within 24 hours of fooling around. What are the chances that I'm pregnant right now when he never penetrated me, the precum was outside my vagina and I took the Take Action pill as soon as I could?