Severe sciatica - help😭

Hello! I have had severe sciatica since about 10 weeks pregnant. This is my second child and I did not have this issue with the first. My OB said it’s likely due to hormones, as I have not gained any weight yet. I am now 15 weeks and this pain is unbearable. I am having trouble walking, sitting, etc. ANY weight on my right side sends shooting pains up and down my legs and back and I lose ability to stand. I am a person who likes to work through pain, but I am at a loss. I need stretches, any pain relievers, any tips at all. This is the worst. Thank you💛