Need some help or advice on what to do😭 35 weeks tomorrow

I’m so tired of feeling like this every day it’s starting to really worry me like i always feel like my hearts about to pop out of my chest because it’s racing my muscles feel week but tense i have head aches and i get hot flashes and I’m dizzy and tired i ask my doctor about it she says it’s nothing to worry about and My boyfriend doesn’t have his car at the moment so i don’t have a way to the hospital to get checked rn and everyone’s at work, this is all happening when I’m just laying down relaxing and it’s worse if i get up and move around or walk. I’m so tired of not being Hurd or understood because I’m a young mother I’m just so frustrated and don’t know what to do being a first time mom😭