Worried! Please help!

I just found out I was pregnant today and I can't be but 3 weeks pregnant , but last night me and my sister in law went to a fair and got on at least 6 rides that were not exactly small and one in particular that takes you high up past the other rides and just drops you... well I'm worried could that have done anything to the baby? I had no idea I could have even been pregnant so we went all out on the rides and now I feel so awful.. could I have hurt my baby in any way?