Feeling super sick all of a sudden ?!

Ladies help me!! In all my previous pregnancies and this one until recently, I’ve felt green at times and even had to lie down but I’ve never thrown up. Since yesterday I’ve felt sooo sick but still nothing coming up, I’m burping and it’s gross but I’m in the office today and struggling to work I just feel so awful. I’m in the UK so they never prescribe anything for nausea it seems unless you have severe HG… my questions are… 1) any tips? I’ve tried ginger and peppermint but not that helpful.. sour sweets sometimes work but can’t face at the moment… and 2) do you think anything could be wrong, like being suddenly really nauseous isn’t a bad sign is it? I’m 12w5d so was hoping it would start to ease!

Help!