After reading your query I can understand your sufferings bruise
problem. For the red marks to you can apply cortisone
cream and take benadryl
by mouth. You need to worry for the same and there is no need to meet a doctor too. Most of the bruise do not last longer than 3 weeks. It may change color from black to yellowish green. Do not pinch or scratch the area as it may cause further problems. If these are recurring then can meet dermatologist
for best management.