Spotting?

Brittany • Lilly Rose 11.5.19💕

So I went to the bathroom and wiped and it looked like my discharge was just slightly pink. This is the only time it happened. Everything has been normal all day. Last night it was like that too and only during that one time. Last time I called they told me to wait it out and if it didn’t happen again or didn’t get worse not to worry about it. But I’m just confused as to why that would be happening? I’m 35 weeks.