My Boyfriend And I Were Playing With Each Other "down

My boyfriend and I were playing with each other "down there" and I touched his pre cum, I think I wiped it but my fingers felt dry and I touched my clitorious 1-2 minutes after I touched the pre cum, ,y boyfriend ejaculated 1 and 1/2 hours before I touched the pre cum and had not urinated in between, I am very worried that I am pregnant so could someone please answer my question as best as possible