Fernandes was visibly distraught, standing hunched over with his hands on his knees as Forest fans celebrated their stroke of luck in the away end. To make matters worse for the young defender, his nightmare evening ended just seven minutes later as he was forced off through injury.
Forest went on to secure a vital draw ahead of next week's second leg at the City Ground. It remains to be seen whether Fernandes recovers physically and mentally from a nightmare evening, with Porto first due back in Liga Portugal action away at Etoril Praia on Sunday.
Pereira will prepare his Forest stars for a Premier League clash against Aston Villa on the same day.