Recently been on boys holiday and oral sex with condom from african street worker. and worried be caught aids and thinking what if the condom split?

Not likely: You should be commended on taking precaution. It is nearly impossible to contract HIV from oral sex but not necessarily other STDs.

You must be worried!: ...as well you should be. You can be somewhat reassured if you didn't see the condom break...it probably didn't. 4th generation HIV antibody/antigen tests are considered accurate at 2 to 6 weeks after exposure. You should get one.If another test is negative at 3 months, you can breath a sigh of relief. I hope this scare will permanently prevent you from pursuing this HIGH risk behavior. Stay well!