7 weeks and looking like 16+

I am only 7 weeks along, when I wake up I feel great for a few hours. then the nausea kicks in. after breakfast I start to bloat, by lunch I look 3 months pregnant and by the time ibfinish dinner, I look 16 weeks plus. I am having BM regularly every day, but it doesn't seem to matter what I eat rather plain bland food or flavorful, greasy and fried food. it all does the same thing, bloat. my upper stomach/abdomen area is looking rather round and then by morning it's all back down to normal. has anyone else had this experience? this is baby number 5 and I've never had this happen before. I've tried gas-X, essential oils, raspberry and peppermint tea. nothing seems to help. If you have tips or ideas that you have tried and worked for you, please do share or it will be a very long 9 months.