I didnt know i was 8 weeks pregnant and i lifted a biiiig table and went down my basement stairs with it and i did bootcamp, crossfit, and cicyling, and went on a trampoline AND NOTHING HAPPEN!
It should be okay. Especially if you didnt feel anything weird when you lifted it. One time with my first baby i lifted a heavy boulderish rock and i felt my stomach muscles spasm and i freaked out. Like really freaked. Lol. But my mom was there and assured me that it didnt hurt the baby and she was right. I wouldnt worry. If it makes you feel better, just call your doctor anyways.
I lift somwhat heavy stuff all the time...like cases of water and stuff...any im 24days away until my due date
I had to buy a doppler just so i could listen to the heartbeat if i was panicking, but now my little man is moving all over so i just feel that, as long as ur not bleeding or cramping bad u should b ok hun i would think anyway, if ur truly worried u can always call ur drs office