Paper cup vs plastic or glass?

Sienna ❄️ • 29 years old, trying with hubby for #1. 1st & 2nd pregnancies were ectopic. FET #1 failed.
So AF is late 3 days now.. I took a $1 pregnancy test yesterday morning and this morning. Both clearly negative. However, I noticed today after taking the test (the last test I had on hand lol) that it said to use a plastic or glass cup and I've been using paper cups. Could this alter the result and make what should be a positive a negative?