Beta, you should not lift heavy things at all and avoid sitting on the floor. Ask your husband to gently massage your lower back with slightly warm sesame oil, and make sure you rest as much as possible.
Honestly, pelvic pain made it so hard for me to stand and cook my favorite meals! I found that using a hot water bag on my lower back (not directly on the belly) and lying down on my side with a pillow between my knees gave me enough relief to go and grab my snacks later.
Is pelvic pain common in early pregnancy too, or does it happen only later when the baby gets heavy? I am planning to conceive soon and want to know how to prepare my body so I don't get severe pains later.
I had terrible pelvic pain while sitting at my office desk all day. Buying an ergonomic cushion and taking short walking breaks every 45 minutes really helped me manage the load, so try that if you are working.
I also suffered from bad pelvic pain in my third trimester. Sleeping with a pregnancy pillow between my legs and avoiding crossing my legs while sitting made a huge difference for me.