A question about prescription drugs and preganancy...?

I am late 3 days for period(last period December 11, should have started January 8th), which is scaring me because during the holidays I got sick with bronchitis and was put on Z-pak, medrol dose-pack and was taking Flonase inhaler (which I am still on) and nebulizer meds(alupent/albuterol). I fell down the stairs on January 1st, sprained my right knee, had x-rays and was put on Oxycodone, whicb I have been on for 1 and half weeks, took last dose yesterday. If it turns out I am pregnant, could my unborn child already be harmed by all of this medication I have been taking? I am so scared of birth defects. I am scared already because I am 38 and dont need more to be scared of. Anyone go through something like this and still had a healthy baby?? Please help. Thanks.