Stress

What’s the best way to deal with stress during pregnancy? This is my third baby and for some reason I can’t seem to stop stressing out. I’m wanting to hear my child’s heartbeat so I downloaded some apps and was able to get a heart beat so I decided to buy a pocket fetal doppler to see if the apps were false advertising, but on the fetal pocket doppler I couldn’t hear anything. I’m driving myself crazy, I just want to know if the baby is ok. I have insomnia so I can’t sleep and occasionally I’ll get some dull pains in my lower abdomen. I hope the baby is ok. I feel like something isn’t right, how do I put my mind at ease and stop stressing?