 [ Symptoms ] how do you know if you are having twins beside the results of an ultrasound i have so much movement in my tummy how do you know if you are having twins beside the results of an ultrasound i have so much movement in my tummy i have my first doctor is appointment next week and i think i may be around 3   4 months pregnant i felt movement and light fluttering already but in more than a few places can i possibly be pregnant with twins without the ultrasound revealing the truth [ Disease ] i had twins and i knew very early on but my doctor assured me that i was not i did have twins but we didnt learn this till the 5th month the fetal protein count was too high for a normal pregnancy it was then that i confirmed my suspisions i could not tell i was carrying two babies though till the 7th month then you know you have activity constantly and i went to term with them so just because you have moving around doesnt mean twins you will know what that seems to feel like when your in your last trimester