Light pink spotting only after wiping, second trimester

Currently 21w2d.

Happened twice in a span of two hours only after I pee: I did notice some heaviness on my vagina but that’s about it.

iBaby is still kicking and moving around like an energized bunny but I can help but feel over worried.

My OBGYN is closed and I’m contemplating on going to the ER if it happens again tonight.

Is this normal or should I go to the ER?

We did have sex this morning but that was like 15 hours ago and this only happened now.