I need help I'm so heart broken 😢😢

I got a positive hpt on Thursday 08/10 Monday 8/14 I went to the doctor where the nurse told me my test was negative my doctor ordered blood work it came back positive at 39miu then today 8/16 it's at 35miu I know this can't be good but I feel fine no cramps no bleeding nothing what so ever. Has this happen to anyone on here and still had a healthy pregnancy and baby. I just can't shake it off. pleas someone help 😢😢💔💔