I have been getting terrible reactions to bug bites, outside. Never had any issues, started this year. We have mosquitos, wasp, blackflies, ants and horse flies here. Not sure exactly is biting me. I get a normal looking bug welt, then couple hours later it turns red, hives up, swells and hurts. I got a bite above my ankle two days ago and my ankle is still red, swollen and sore. Swelling is from top of foot up past my ankle. Got one on my calf and it hurts so bad if you press on it, feels like your getting pricked, now turning red and aching. I do get dizzy and have been taking benedryl when it gets bad. Is there a reason all of a sudden I am having such bad reactions?