Bleeding after sex

Sarah • Proud mother of a beautiful daughter. Pregnant with #2

TTC #2. 11 month old DD. Breastfeeding.

I've noticed lately I bleed after sex. Not much. Just pinkish usually when I wipe but the other night it was bright red but only enough for one wipe so not a huge amount.

I'm up to date with smears. Have no pain.

I read something somewhere that it can happen when you're breastfeeding. Something to do with hormone levels and whatever.

Anyone else have the same? I can't help but worry.