5th pregnancy 4 previous miscarriages

Megan • Mon, Jan 26

So I took 3 pregnancy tests this past Saturday which were all positive. I am very concerned about a miscarriage I have had 4 prior to this pregnancy and never had carried full term. As a matter of fact past 8 weeks. And advice on what to do to prevent this from happening again or specific questions I need to ask the doctor I have an appointment tomorrow morning.