Pregnancy and Keflex

I just found out that I'm pregnant, but two weeks ago I had a severe ear infection and my doctor prescribed me with Keflex and Motrin 600mg for my TMJ disorder, that maybe was causing me more pain that the infection was already giving me, on the first week I stopped because I was feeling a little be dizzy and I had nausea, and was worried that I might be pregnant, besides that I had to drive around to go to my school and work,  and now I have gotten a possitive pregnancy test. Should I be worried that all this medications may harm the fetus, or my future baby, or is it possible that all this medications may have provoked a false "positive" result????  

[AnnieBrooke]

Keflex is a class B drug, meaning that they have done some studies and have no immediate result that suggests a risk, but have not proven it safe either.  However, it is sometimes prescribed during pregnancy, "if the benefits outweigh the risks."  Motrin is also not one to take during (specifically) later pregnancy.  If the time overlap was only a couple of weeks, the embryo is not even implanted for part of that time, it would not get any Keflex or the Motrin while just floating around.  I'd ask my doctor at the next appointment, but would not be overly worried.