*Warning!* Little bit gross if you don't like toilet talk
I have a 10yo mare who whilst being well behaved and tempered whilst in season she when out in the paddock seems to pee and 'wink' a lot, or at least more than others I have seen. She also seems to get particularly dirty back there when in season, and I have noticed brown/red build up between her teats, which are particularly stretched due to damage to her sensitive skin when nursing her one foal.
She has never shown poor performance or pain when in season, in fact I never know until I watch her in the paddock. She doesn't get bossier or nasty with other horses or myself, just lots of peeing…
I'm going to get a vet out soon to give her a check over, including her eyes as she's an appy. Should I be concerned about this, or is it common/harmless?