I don't know wat my feelings should be

Today was one of those days :( ;( again... In March 2018 my twin daughters where born with disabilities and at the end they did not make it.... I was scared to get pregnant again so I was on the birth control pill for 6 months after 6 months I could not get off at work so I started having strange periods (missing one month, late the other month, less days, more days, less flow etc..) After all this strange periods I bought pregnancy tests and tested 7 times all said Im not pregnant.... Then on 16 May 2019 I was so sick that my manager told me to go to the Dr.. Then I went to the clinic on 18 May 2019 where the sister did a pregnancy test that was positive on 23 May I went for a checkup at the clinic and all the blood tests and they told me I'm about 16 weeks pregnant and booked me for a sonar at the hospital.. Today was my sonar and I don't know wat to say.... It was heartbroken to see that there is a sak like a normal pregnancy but no baby and the Dr said that if I'm pregnant I'm only 5weeks ;( is this normal