If there was drug overdose(cefixime 10 tabs and metron 7 tabs),but followed by two rounds of vomiting,would it affect the fetus as early as 3 weeks?
See... I am really scared... I don't want to abort this baby... and more... when I immediately went to hospital... it hadn't shown any symptom on me and also the blood report said everything was normal.I am 6 weeks pregnant now.is it safe to keep the baby?
And even if it wasn't, by what month will da ultrasound show there's something wrong with the fetus?

We have already told you the answer to this, several times if I remember. It is IMPOSSiBLE for us to tell you at this time if the fetus is safe. This is something you need to discuss with your obstetrician.

You were answered here...

https://www.askmehelpdesk.com/alternative-medicine/pregnancy-medicines-383256.html

And here...

https://www.askmehelpdesk.com/pregnancy-new-motherhood/pregnant-suicide-379962.html