My DD is 11wo and for the past couple of days has been fussier than usual, not feeding as well as usual (she's ebf) and she's been snuffly. Today she's been upset and crying a fair bit and over the last hour has been very sick four times. She soaked through DH's t-shirt twice (he's given up wearing one for now!), then she was sick all over herself. She then got very upset out of hunger and had the best feed she's had in a couple of days, much less fussing. She seemed happy, did a regular sized burp and then about five minutes later threw up all over me. Like, a lot. She's never been a sicky baby at all. I know babies are sick often but this isn't like her at all. I don't want her to get dehydrated and I know she needs to feed but it seems like she can't keep it down. What should I do?