When I bought this orchid in spring 2018, the seller said that the plant had gone through a massive heatwave. It's a Masdevallia coccinea x caloptera. For the past year, it grew very slowly until recently it put out several medium sized leaves. The oldest leaves stuck around staying yellow or green/yellow. Today, I noticed that a newly opened leaf is spotted . Could this be a virus or something I need to worry about? Thanks!