So worried!!

Im stupid really!! 
I have a wedding party to attend in 1 april. So yestersay i decided to shop for a adress. I exhausted my self. Most of the dresses i tried on were so tight on my belly. I was looking for a comfortable dress ofcourse and that isnt tight. But all the things i tried were so tight on my belly. 
When i went home i had a strong pain + back pain. Im 7+ weeks pregnant. 
I slept directly and after few hours i vomited and felt a little better. 
Today im feeling slightly better. But cant stop worrying about the baby. 
I hope i didnt harm him/her.. :( lesson learned.