Hello Felicia! You shouldn’t be carrying heavy stuff especially u are currently at e early stage of pregnancy..
I do experienced e same but not when carrying heavy things. I was told by doctors it was because my body are trying to make space and getting prep for baby to “live” in therefore will feel backache..
You can try using heat pad for a few hours (pls paste on your clothes not body) to relax e aching back muscle but of course best to check with your gynae first.
Take care yah! 😊