Last Night I Had Oral Sex With My Girlfriend And

Last night I had oral sex with my girlfriend and maybe a minute afterwatds I noticed my tongue and throat felt a little weird, like a tight kind of feeling. Then I also noticed that my stomach felt very odd. As if there was an air bubble inside my stomach. And it lasted for the rest of night maybe but I woke up and now it's kinda gone. I was a little worried. Is there anything I should be aware of about that? I'm not sure what caused it.