Painful lumps in breasts

I'm currently 20 years old and in February i discovered a small lump at the side of my left breast which hurts when pressure is applied. But it disappeared after my period and now just 2 days ago i noticed another lump slightly below my left nipple and hurts when pressure is applied. I'm getting very worried and read on the net that fibrosystic lumps can be caused by birth control pills. Since January i've been taking emergency contraception 4 times in all, with twice in Jan and once in march and once in april. The last time i had a non-emergency contraception induced period was in February. For medical history i have had a cyst removed near my collar bone a few years back and have discovered a small lump at the underarm a year ago but it went away after some time. Is this new-found lump at the area below my left nipple temporal too? Please advise!!!

[CCF-RN,MSN-rf]

Dear Michelle86:  If a woman has lumpy breast tissue it is not uncommon for these lumps to swell and become painful during certain times in the menstrual cycle.  These changes are hormone related - that's why they often resolve after a period.  If this lump gets bigger or does not go away with your period, you should have your doctor take a look.