I had the same as @bm2021 - one morning had my breakfast as normal (possibly slightly later than usual though), brushed teeth, went to get dressed and had to dash to the toilet to throw up! Had felt very nauseous throughout the first 12 weeks but hadn't actually thrown up and then just had the one random episode at about 15/16 weeks - never had it happen again.
Is this normal?! I’ve managed to go my whole pregnancy so far with no sickness, just awful nausea but not once been sick... except now! Just took two spoonfuls of gaviscon, first one was fine, second spoon I couldn’t swallow properly for some reason but managed to and all of a sudden felt sick and threw up about 10 seconds later!
Please don’t tell me this is the start of late morning sickness?!