I had unprotected sex with a guy yesterday. I gave him a blow job, there was some deep throat/gagging. We also had some anal play with a toy while I was riding him before hand. I washed up shortly after. But I started having a sore throat and was extremely sore and had a slight fever the same night. My body and throat are still slightly sore today. Should I be worried that it is an STD? What is the usual incubation period if it's orally transmitted?