Poison Ivy vs. Ultrasound

I have an ultrasound on the 30th and I've also had poison ivy for about 2 weeks. My boyfriend was doing yardwork and he gave it to me..

He can take steroid pills and he also got the steroid shot; 2 days later his poison ivy was completely gone. However I can't take either due to being 27 weeks pregnant.

I'm wondering if I can still have an ultrasound with poison ivy on my belly?

And also any poison ivy remedies while pregnant?

I've been to the walk in and I've tried all sorts of creams and nothing seems to help..

I really hope it's gone by the time my babies are born so I can hold them and care for them!