Anxiety/Stay at home mom

I’m a stay at home mother and I am constantly with my 16 month old daughter. She’s attached to me but I am also attached to her. I hardly ever leave her and when I do I have so much anxiety and think something bad is going to happen. She has two awesome grandmothers that I trust but I believe no one can take care of her like I do. If she chokes while eating, can they help her? If they take their eyes of her will she get hurt? It’s a constant thought in my head and it’s truly upsetting, I HATE being like this. I know I need alone time and she needs to get used to being with other people but she’s not, and I try to avoid it all the time. Another thing is that I have bad thoughts about something happening to her in general. We are on my husbands boat quite often and I have a huge fear somehow she’s going to fall out, slip through the life jacket and drown. This anxiety is taking over my life and I dread doing anything that can cause harm. ANYONE else experiencing this? 😣