I was stung by a wasp 9 days ago. Had swelling, pain, and took Benadryl. Didn t look like there was a stinger and my husband found a nest of wasps where I had been. Felt better the next day. Now this am , 9 days later I woke up and the site hurts, itches a lot , skin appears irritated around the site. Sting site still feels like a small lump No fever, no drainage. Please advise