Hi there,I will suggest you the best possible treatment options.
First of all do not panic.
As such there is no gross adverse effect of 
fever on the conception.
Secondly, tablets that you have taken contain plain 
Paracetamol, which is proved safe drug. 
As you are about to get your next menses,I will suggest you to wait for the same. If you happen to cross your dates, please get urine 
pregnancy test done on morning's first sample of urine. In case of any doubt, blood 
beta HCG test and USG will be of help.
Please start on 
Folic acid and vitamin B 12 supplements as you are planning to conceive.
This helps prevent various complications during pregnancy and delivery and fetal anomalies.
I hope this answer helps you.
Thanks.
Dr. Purushottam Neurgaonkar