I understand why you feel this way, my elder sister had 2 miscarriages before she was actually able to give birth and it had instilled a phobia in her. Right now you need to take care of not only your physical health but also your mental health so ask a family member to come stay with you for some time if they can.

There are meditation techniques that help pregnant women cope with the stress of having a baby and you should definitely try them out. Staying alone right now might take too much of a toll on you so try to move in with your parents and have somebody you trust come over to your place.

Hiii congratulations As a doctor I should advice you aswell as let you know reality and side effects if this would continue you'll be okay trust me don't panic it will effect your baby just try to be happy and engage yourself in the activities you love don't overthink if possible face time your husband and call someone from your family your mother sister toa stay with you or else involve yourself in small gardening think Positive so your baby can be healthy and you get to have a easy delivery try to be happy for your baby you're now responsible for two lives take care and may God bless you