9m DD has had a barking cough (she sounds like a seal) all day, and has been very fretful: she got almost hysterical this afternoon when we were out, and has been very clingy all day (fairly but not totally out of character). She went to bed as normal this evening, but after about 30mins sleep she had a huge coughing fit - I went up to her and found her in a (small) puddle of vomit, still coughing. When I picked her up to comfort her being cleaning her up she was sick a few more times. I cleaned her up and she took another BF and has gone back to sleep.
Should I worry? We're leaving her with her grandparents for the first time ever tomorrow night and I'm already a little nervous about that (she's not great at taking expressed milk and, when she gets into a state, needs me to calm her down) and it'll be ten times worse if she's ill. DH is still at work and my mum's out for the evening so don't really have anyone I trust to call.
Thanks.