Help?

So my boyfriend work 6-5 so I’m alone all day with our almost two years old daughter, and I’m pregnant again.. and well I always feel nauseous, and feel like I’m going to faint ( that’s how my first pregnancy was ) I don’t know what to do, I have anxiety and once I feel like that I start to get scared because I’m all alone with my daughter. Anything I can do or take to not feel like this.