Day 3 IVF stim scan - HELP!

Carley • Happily married & expecting baby #1 in April via IVF🙏🏼🍼❤️
Has anyone else had a day three stim scan and showed no response but went on to have a succesful cycle???? RE said not to worry and that sometimes some people are just slow to start and react but I can help but panic. But I had 0 follicles growing... Absolutely nothing. Go back in two days for another scan. They didn't even take blood because she knew my levels were so low😩😩😩😩 
I'm on 225 Gonal f and 75 menopur. Did 5 weeks of birth control with no Lupron with a three day break been off of BC since last Saturday. Started stims Friday night and had the scan this morning... First cycle IVF for unexplained infertility.