It can be rough. It really can be. Hopefully you are just at the peak of feeling terrible (9-10 weeks is often the worst) but yes, if you are struggling to eat or drink then there are approved medications you can take to help you function better. But the exhaustion of the first trimester, plus nausea, plus not eating properly is a perfect storm of helping you to feel utterly rubbish.
If it is any consolation I pretty much hated my entire pregnancy, I never really glowed or felt blooming with a baby or any of the cliches. I was tired, sick, stressed and overly emotional the entire time. Now hopefully you will start feeling better really soon and love your pregnancy - but if you don't it's fine. Many, many women really don't like being pregnant at all.
I also now have the toddler who can scream and shout and stamp. They do. Sadly. This morning, for instance, she thought it would be amusing to push me with her feet while I was crouched down changing her nappy, and I fell back onto my arse and whacked my head on the sink. Brilliant. But what you don't often see is what else they do - hug you, rub your head, get the plasters out of the drawer, "sorry Mummy, look, a plaster, plaster makes Mummy all happy now..."
When you feel fucking awful all pregnancy it is so hard to focus on anything nice and it is so easy to see doom and gloom everywhere. But you will start to feel better at some point, and it will be ok. Promise.