HELP!! I've been admitted to hospital


I was admitted to the hospital with a severe allergic reaction and have been pumped full of meds all day and will be all night. I took Clomid this cycle and I'm now on day 20 of my cycle. If not pregnant, I will get my period in 8-12 days. I'm really scared that if I'm pregnant, all these meds will hurt the baby. The nurses and doctors are horrible and aren't giving me any answers at all. They did a urine pregnancy test hours ago but no results yet as it's the middle of the night I'm assuming. Is it too early to do a urine pregnancy test? Could it come up negative now and then positive later? Thank you!