Sorry if TMI spotting after orgasm?

Just wondering if this has happened to anyone else? I’m 29 weeks and had an orgasm this morning (non penetrative). When I went to the toilet after and wiped there was some pink blood. It only happened that time when I wiped then it stopped. I called my maternity unit anyway though and they told me it sounds normal but to put a pad on and see if it carries on.

I’ve got a midwife appointment in a couple of hours anyway so I’ll mention it to her then but I was just wondering if anyone else has had this ?