Self Employment Tax

I am a health care worker. From my W2, I have income exceeding $147,000. My taxable self employment income is $44,343. So, I have paid maximum amount of Social Security and Medicare against my employment income. However, on SE, on line 11, software computes 2,9% of $44,343. Just want to re confirm whether this is right. Pl help. Appreciate to have replies. Thanks in advance.