Hi Last Month I Got Period On 18th Feb This

Hi
Last month I got period on 18th Feb this month I don't got period on time...
So last from 3 days I taken primolut n tablet 3 times a day.
Before taking tablet I have gone thru pregnancy test..it was negative.
But today morning I am feeling vometing and weekness.

So I am worried if I am pregnant then ..is primolut tablet will affect it..
Plz advice soon..
Thanks in advance