You have asked a "how many angels are on a head of a pin question."
You are really asking if you have harmed yourself.
One question that is impossible to answer properly.
A lot depends upon the amount taken, your weight, general health and genetic sensitivity.
The primary effect of the NSAIDS is to inhibit cyclooxgenase (prostaglandin synthase) thereby impairing the ultimate transformation of arachidonic acid to prostaglandins, prostacyclyn and thromboxanes. In the majority of cases it is relatively safe but certain individuals develop an unpredictable host-dependent reaction that is idiosynchratic in nature. This can create a strange array of clinical manifestations interfering with metabolism and the immune response.
To cut to the chase among those who use NSAIDS a small minority of unhappy campers develop big problems while the large majority develop no problems.
The drug itself works it's way out of the system in a relatively short time.
You might want to get a liver function test, which isn't expensive.
Ibuprofen has a very short half life in the human body. This is why you have to take it several times per day when fighting a nasty headache or other pain. The body metabolizes the ibuprofen and clears it out in a matter of hours, not days or weeks. This process remains the same whether you've taken ibuprofen for two days, two weeks, or two years, unless you have liver or kidney problems.
How much ibuprofen were you taking, how often and what for?