Please help!

I don't know what to do. I'm finally over coming my intrusive thoughts that I suffer from because of anxiety. Its gone from those, to now constant panic that something bad is happening.

I drank water earlier and it tasted weird and I started feeling a little odd. I immediately worried that I might be poisoned.

Now I just finished cooking dinner over at my parents house (they are on vacation and my husband and I are hanging out with my brother and his fiance) well I got this overwhelming terrible feeling after I smelled something funny that what if there's a fire tonight and my brother passes in the fire?

I cannot stop panicking about random things. How do I stop this? I'm pregnant and not on any medication during my pregnancy. I have no idea how to stop this.