You do have people round you. Just ask for them to be on standby and if needs be they would have to leave work and accompany you. They could make work aware of your dye date and im sure when someone rings their work saying your in labour no one would grumble and people would help you. You are not a burden you are pregnant and have a little one already how can you take your daughter with you during labour
Have your family not already discussed this with you? If you are concerned firstly talk to your closest family and friends and surely they will rally round
Hope all works out and always here to chat