Louhotel Welcome. That sounds like spd, the hip pain, to which women with Hyperemesis are prone, on top of other woes. It can mean an easy birth at least. Sorry you feel so foul. Most people get an improvement between 14-21 weeks. Even those who are unlucky enough to suffer throughout, very rarely feel as bad as in the first weeks.
You have already have great advice about meds and anti acid. Some drinks and foods of a sort that have helped people on here. Full sugar flat coke, ice lollies, ice cubes, soda water, the juiceof tinned fruit, Dr Pepper, Elderflower water, lemonade, fizzy orange, orange squash, orange juice (if not too acid), Lucozade, sips of chocolate milkshake and Robinson's fruit drinks. Those foods of a sort: cuppa soup, baked potatoes, cheap ice cream, tinned fruit, slices of melon and mango, Scotch pancakes, biscuits and nibbles of crisps and chips.
Boredoftryingusernames What a lovey baby! And what a lovely labour! 
[gloers] 
. I am so glad that this thread helped in your darkest days. Hopefully the nausea will tail off. If not, it may be breast feeding related, and will go when you stop breastfeeding. I only breast fed up to five months because I had that nausea. It's very rare to have sickness after the birth - only about six or seven including me from years before, and also SeaEagleFeather have had it on these threads in over eight years, but it does happen to some through the breast feeding letdown hormones.
Olivecake Good advice from you, Foodylicious and Hotchocolate and SeaEagleFeather. I hope beanhunter and everyone is doing OK.