Lighting in early pregnancy

I was at my parents today and my mom got a delivery. It was a pretty heavy box, maybe 75 pounds. I'm the "strong one" of the family and am always lifting stuff for everyone but obviously trying not to right now. No one knows I'm pregnant bc I'm only 7 weeks and my mom basically forced me to help her lift it. Now she did hold most of the weight of it be I tried saying I hurt my back. But now I'm super worried 😟