How is it possible??

How Is it possible to be pregnant and not have a single symptom at all I found out last night and took another test this morning and it was positive also I don’t get it I haven’t had a single symptom except not having my period but I figure that was because I had a dnc on February 9th and got my first period back on March 20 and just figure this month was weird because I started working out and my body may be changing well I got. A positive test and not sure what to think I have had 3 miscarriages my last miscarriage was in January that’s why I had the dnc in February I have only one son who is 17months i don’t know what to think Is it normal not to have any symptoms at all ???