Sternum pain at six weeks

So I had a lung infection and sternum pain at 3 weeks pregnant and the doc gave me a pregnancy safe antibiotic. Dr. stopped the meds after checking my blood test results.

Now fast forward 6 weeks, I have sternum pain again and this time it is worse. It is radiating to all my rib cage and sides of my breasts. I feel it more while lying down on my left. I don't think I have another infection because I don't have a fever or any other illness related symptoms. Now I am so worried.

Has anyone had it during pregnancy? Should I consult my gynae or another doctor?