Ay mama, that sounds really uncomfortable! Bukol with pain could be mastitis or a clogged duct, which happens especially kapag active ang baby at nag-feed frequently, hindi ito normal na dapat i-ignore kaya I'd really suggest seeing your OB or a lactation consultant soon para malaman kung ano exactly at ma-address agad. A few of us mums experienced similar things, and one swear it was just a clogged duct na nawala pagkatapos ng warm compress at proper positioning, pero may isa rin na kailangan ng antibiotics so better safe na check with a doctor, ha. In the meantime, try warm compress bago mag-feed para makatulong sa pain, pero don't delay the checkup.