I might be pregnant- the past 2 weeks though I have had about 4 motrin, 2 norflex (orphenadrine) and I am on atenolol & probiotic could I have hurt the baby? I would be about 3.5 weeks now

Should be OK. It is always a good idea to take as little medication as needed when pregnant, but those were not highly risky meds.
Pregnancy. Of the drugs you took, the only one that might cause a problem, is atenelol, although no studies have been done on its effect on the fetus during the first trimester. All things considered your fetus she be fine.
No . That would not hurt at this point but take a pregnancy test. If you think you might be pregnant check then check a home pregnancy test. They are cheap, reliable and available at any pharmacy.