should I take the morning pill?

So I'm ovulating and I was not in all my right sense when I had sex with my ex it was breakup sex he did not come in me I saw him come on a trash can buy the pre cum did land on me should I still spend money on the morning pill I heard the pre cum does not contain cum and I really doubt it can get me pregnant and I'm broke should I still get it it's about $50😩