Steroid 7 weeks 2 days pregnant

first

I am 7 weeks 2 days pregnant and have had an allergic reaction to something. At first I just took a Benadryl but it's been progressively getting worse. I went to the hospital and they only wanted to do a steroid so I left. My eyes are now almost swollen shut so now it looks like I don't have a choice. Has anyone had to take a steroid this early on in pregnancy? If so, any complications? TIA