I have just had covid. At the tail end of covid I developed a cold sore around my nostril and one on the corner of my mouth. The nose one looks like the normal cold sores I get but the one near my mouth is horrendous. Apart from being really painful, it is about the size of a 1p and has a massive red swelling underneath the cluster of blisters. I've honestly never had a cold sore like it. Have any other cold sore sufferers had similar after covid?