Do I have an sti?

Recently I gave my partner a blow job I’ve never had sex and it was my first time swallowing. I have given him a blow job before and I spit instead. Now I kinda feel like I have a cold I have a sore ish throat and a bit of a runny nose what do u guys think? I don’t know anything so leave me any useful advice please! I’m only 15 and I don’t want my mom to be disappointed in me.