Hugs for you purplegiraffe... But, erm, from a distance if thats ok. You could drink Diarolyte if you can get it down as it'll help with rehydration etc. Hope it passes quickly. I had similar for a week at 8 weeks and everything looked fine at the 12 week scan.
Toast - Southampton has John Lewis, Mama and Papas, Babys R Us all with huge pram sections. However it is about 70 mins from you, so would be a day trip. We were there to visit family anyway. There is also an Ikea for furniture and they are all within walking distance of each other.