Sickness getting me down

TTC
Only 9w 4d pregnant and I have hardly eaten the last four weeks, trying to force myself to eat but all I can manage is dry goods, not much fruit and veg. I have lost 8.5pounds due to sickness and not eating. I have been prescribed anti sickness medicine, I need them so much to keep the sickness down but I already feel like such a bad mum. It is really getting me down and I'm worried I'm not doing enough for the baby 😟. Anyone else felt like this? Trying not to let it get me down, advice welcome!