Achy leg -4 weeks 5 days

Jennifer
I have had an achy right side since before I got my positive pregnancy test. It started in my right hip/buttocks and down my right leg to my calf area so I knew it was my siatic. I did some siatic specific yoga stretches, used a tennis ball, and a heating pad. The pain left for a day and now the same right side is achy but just from my knee down. Any suggestions?