Pregnancy after miscarriage advice

Kayyyy
I had a miscarriage at 7 weeks in December and my last period was July 1st and lasted 6 days and I have not gotten my period since and I have been having extreme anxiety and trouble sleeping and this Sunday I woke up and puked all day and the nausea has not let up along with hot sweats . I took a test 2 weeks ago and it was negative and I was wondering if anyone has experienced any if these symptoms and found out they were pregnant ?