I bent over and picked up a basket of laundry when doing so i felt like a rubber band snap in my lower left back. it hurts to stand to lift either of my legs and to put weight of my left leg?

See your PCP for a possible MRI and referral to an orthopedist. Don't try to treat yourself.

While icing and cold compress plus limiting movements can help, a very good option is to see the PCP , go to Urgent Care or even ER to be sure no major injuries have occurred.

Several possibilities include ruptured disc, facet impingement, and sacroiliac dysfunction. Persistence indicates the need to see your physician. Specialty consultation with a physiatrist or an osteopathic physician may be good choices. Wearing a sacroiliac belt may help control the pain and allow better mobility.