Do i have Periductal Mastitis or IBC

Hi All,

Last month Aug 5th i noticed my left breast suddenly swell up and at the time it was visibly red and hot to touch.. I grew a bra size as well in the next few days. My left breast was feeling heavy but no lumps anywhere but found lumps in my armpits but i put it to glands being inflammed. Days passed by and being mum of 4 i really did not find time to see my gp and besides i did not want to waste time of the doctors.. It increasingly became difficult as my breast was very tender and i struggled to keep bra on or even hug my kids was like painful. So i went to my gp in the end the registar checked me and said il make an urgent breast clinic appointment and i saw them yesterday.. 

I was examined by 2 doctors and both kept saying left breast axilla tender , lumps in arm pit. The doctor asked if i smoke for which my answer was No, so he went on to explain i could possibly have a Periductal Mastitis but my question was i am not breast feeding my babies the last i did was in June 2017. He did not explain to me anything and said it should clear up in 6 weeks or so and then if it does not to come back for further tests.. 

I am so tender after the examination and this morning my breast have slightly grown again and its so uncomfortable. Not sure if this is related i am not able to lift my left arm up and when i try it hurts my shoulder and collarbone and pain up to my arm muscle paralled to my nipple (i think i must have hurt my arm surely and this is not related to my breast issue and this has been since aug 5th when my breast had the changes) however the doctor said it was due to the glands swollen underarm and that was causing this.. 

My husband and i are very unsettled as they did not even do a ultrasound .. God forbid but if its is anything that is .. we have 4 young kids (oldest is 9 and youngest is 20 months) and im 32 years.. 

My neighbour directed me to your website and asked me to post on here as she said sometimes the doctors miss the early symptoms and if no lump is found in breast then its even difficult unless a scan or mammogram is done. She mentioned to me Inflammation Breast Cancer and she explained to me a little about it and my symptoms do tally with what she said.. Im very anxious and i do not know what my next step should be .. wait for 6 weeks or go back to gp ? 

My symptoms so far

Left Breast Tender especially on the right side of the nipple 

Skin looks slightly pitted but not orange( which doctor said dont worry its normal ) 

 Left Breast looks and feels heavy 

Swollen lumps in my left armpit 

I am sorry this is long but i am really lost and slightly fearful of my situation.. Thank you for reading this through and i fully appreciate all your replies xx