3rd baby

3rd baby and due in 3 weeks. I had a really energetic day yesterday where I felt brilliant (after the initial morning slump!) And then today I’ve woken up to vomiting and diarrhoea with an internal burning sensation covering my entire bump! I’m due to find out when my section is in a few days but wondered if this unwell-ness is something to be concerned about? I don’t drive and live about 25min drive from the hospital so don’t want to call triage if it’s just general pregnancy stuff, as they always want you to come in and I can’t with two toddlers at home! Thanks all!