Should I take a morning after?

My partner and I had always had protected sex. I don’t see him much, so when we do, we would usually have sex. We would use condoms and he would pull out too so we could be even more safe.

Last night we used a condom and when he finished, he did stay inside me for a hot second but he got out when I told him to. But when he pulled out, I saw a string of a white discharge attached from the tip of his condom. I was worried that it was his sperm but he says that it was probably my fluids and he double checked to make sure the condom wasn’t broken, and it wasn’t broken.

He suggested that I could take a morning after pill- but those are so expensive and I do not want to spend that much money if I really do not have anything to worry about. The condom was not broken at all but I’m still concerned about the fact that I saw white discharge. Should I be worried and take a morning after pill?