I lifted something heavy & felt a pull in my lower back & more to the right side. My right buttocks & leg feel weird also. I had a section 6 weeks ago with a spinal tap, not sure if that would need to be brought to a doctor's attention? I am in a lot of p

Agree. See your doctor. Other things that help include homeopathic remedies and acupuncture. Specifically arnica, bryonia, and rhus tox hep with muscle strains. The weird feeling might be indicating a mild disc herniation....Acupuncture is also amazing for pain relief and healing.
Low back pain. You likely strained your back. The fact theat your leg feels "weird" is of some concern. Yes i would talk to your doctor.