Is it normal??? PLEASE HELP

Hey y'all I'm bout 7weeks pregnant and I don't have no symptoms of pregnancy apart from the odd sensitive boob's every now and then but that's it. Is it normal not to have symptoms?? When I was pregnant with my daughter I had sickness ect but this is freaking me out as I'm prone to miscarriages and I really can't relax. Please can I have some help and advise as I'm going outta my mind #Worried #Anxious thanks in advance