PAIN IN BREAST... help post on this

hey everyone … im a first time mom…i been breastfeeding for 5 month now. my left shoulder to my back and breast area is hurting.because of shoulkder pain i feel i cant take air in good… since yesterday it got worse.. i live with my husbamd and son alone .. i dont have anyone else to look after my baby because my hubby works from afternoon. any idea wat might this pain be??? help reply

Seek medical advice asap