@Cat_LeFey There is a reason for this. Unlikely as it seems, it's good medical practise to rule out pregnancy 100%. It turns out, counter-intuitively, that it's very easy indeed to be pregnant and not know it.
And it's a common condition with a long list of side-effects.
We know this first-hand. My wife has a long list of chronic illnesses. The drugs masked her pregnancy. We're not ignorant but had no idea. We only found out when a spinal x-ray found a second spine...