Will I face issues obtaining a 30-day visa exempt stamp in Thailand after my current visa?

Hello, I did a quick search of the group and couldn't find my particular situation addressed previously but forgive if I am being redundant:

I first arrived here in Bangkok on a 6-month METV from USA. This expired in March so I applied for a 60-day SETV in Penang. This visa has validity until May 25. I am planning a week-long trip to Seoul mid-May and I plan on returning to Bangkok for 30 more days before flying home to the States. My question is simple: Taking into account my current and past visa stamps will I encounter any trouble obtaining a 30-day visa exempt stamp for my last month in Thailand? TIA