Spotting after sex third trimester

Im 28 weeks and last weekend my partner and I had sex after quite a long time (as he was too worried about it)

The next morning I noticed a small amount of red blood which worried me but soon it seemed to go

However over the past week I’ve been getting orangey spotting each day... I’ve called my midwife who said as long as it doesn’t go back to red it should be fine but I can’t help but worry.

Has anyone else experienced this? What advice were you given?