Sickness

So I’m not 13 weeks and 4 days pregnant and I’ve been sick throughout my whole pregnancy so far but it seems to be getting worse , I can’t keep any food down at all , the smell of food makes me vomit , the look of food makes me vomit and eating it is even a bigger problem , I have no appetite , I don’t want to eat anything at all and I’m genuinely feeling so weak after I’ve been sick , I try my best to eat as much as I can but all it does is come back up within 3-30 mins of eating and it’s horrible , I’ve tried everything to stop me from being sick and nothing is working and the doctors won’t put me on any sickness things , I’ve even tried anti acid tablets to calm down my acid reflux but even that hasn’t worked , I’m just nervous that’s all