A Purple Bruise Like Mark Had Appeared On The Corner

A purple bruise like mark had appeared on the corner of my eyelid when I woke up this morning, is NOT raised, is not a scratch or a bite. Eye feels a bit scratchy. I am 53 year old female, have pains in joints in morning time - elbow, ankle and fingers. I had a breast cyst removed 6 weeks ago which got infected and was on antibiotics, the scar if still fairly red but infection seems to be cleared up. I also had ear infection and thrush in ears recently, am using Canesten ear drops at the moment. Also developed some mouth ulcers over the weekend.