These tiny red/purple vessels sounds like spider veins to me.They are usually harmless,and could be caused by weight gain in that area and also by hormonal imbalance.
Usually painful lumps are not indicative of breast cancer.The swollen red nodes in both your axilla area could be an inflamed hair follicle or an indication of an infection somewhere in the body.Looks like the antibiotic that your doctor prescribed has done it's job and cured the infection.
From what you describe,I don't think that you should be worried about breast cancer, but if you are concerned ,by all means you could consult your family doctor for a clinical breast exam so that you can be reassured about the problems you have mentioned.
I wish you well... :)
thank you so much for answering my question and i will visit the doctor as soon as possible because i was worry to see adoctor but after your answer i wasnt... wish the best to you