Felt very nauseous from the start, but could mostly function. Am 11 weeks and yesterday had severe vomiting from afternoon all the way through the night, and so urgent I had to have bucket, couldn't make it to loo! Today feel weak but already nibbling food again. Wondering if a bug or if pregnancy sickness can suddenly present severely like this as late as 11 weeks! Kinda hoping it's a bug so the worst is over!