hi @Capricorn8990, sorry you're feeling so anxious. I swear by the Headspace app both in and out of pregnancy, but it has a pregnancy pack that is lovely to follow. Are you anxious specifically about pregnancy or just in general? I feel like hypnobirthing may also be really helpful as that is lots of relaxation and learning information to empower you as well.
@ShellUK09 my friend also had terrible sickness, and she was reassured to learn that the baby takes all the stuff it needs before you so definitely just eat the mini cheddars or whatever else you can stomach and don't worry about anything. hopefully you'll have some relief in a few weeks...
As other have said, the flu vaccine isn't live. TBH I've had flu only once in my life, pre kids, but I can't imagine having it and trying to look after my kids with it let alone doing that with pregnancy symptoms on top, and fevers in pregnancy can be dangerous for baby, so I will be having it next week. I had the vaccine in my previous two pregnancies but nearer the end as they were autumn babies so had the new season's one to be covered for the winter they were born in. I had no side effects.