Hi! On Thursday I was on a school trip with the kids and we were outdoors for a woodland walk for part of it. Friday morning i noticed 3 bites, 2 on one leg one on the other. They were itchy but I tried not to touch them. They were bright red and itchy. The one on the back of my calf got bigger, bright red with an extended lighter pink area all around it too. I treated them with corticosteroid cream over the weekend. Today, the on one the back of my leg now looks bruised in places. Stand longer itchy and no longer hot. Not sore. Just don't know whether to be concerned or not? These pics are of all 3 bites from today when they've gone more purple, wish I'd taken pics of them initially.