DD is 4 months old and has been EBF from birth. She's held at about the 50th centile for weight until the last month when she's seemed very fussy and dropped to the 25th. I have had my period every month since giving birth and it seems to make her very fussy and my supply seems to dip lower. This week I started my period again and she's acting very hungry and getting hardly any wet nappies. I've tried giving formula but she's point blank refusing the bottle. I'm at a complete loss as to what to do and getting very worried.