HELP!!! Super paranoid

M

So I’m 9 weeks 5 days pregnant. All of a sudden the past few days my nausea has almost completely gone away. I’ve also switched to taking my prenatals at night and upped my dose of B6 recommended by my doctor. It’s kind of freaking me out though like I may of miscarried. I had a chemical pregnancy which was actually caught a year ago and really upset me also my sister just had a miscarriage at 8 weeks so I’m really paranoid it’s going to happen to me. Had an ultrasound a few weeks ago and everything was fine heart rate was 166. Baby measured almost a week ahead. I’ve had no spotting or bleeding..no pain. I’m just so paranoid...has anyone else had this happen?? Thanks.