I found out I was pregnant at almost 12 weeks, I too had taken medications, drank, had hot baths and spent lots of time in a hot tub rught before I found out. I also had x-rays at the ER (upper chest) I asked the doctors about a pregnancy test but because I was on birth control they said I did not need one --I thought that was a bit odd, but hey Im not a doctor... They actually thought I had cancer because of my symptoms, so were doing some tests when I took a home pregnancy test and found out. Turns out I didnt have cancer, I was pregnant! My son is 3 and is very healthy and atctive. Remember you can't do anything about the past, so try not to worry. Focus on what you need to do now. Congrats and best wishes!