Relax. With neither anal sex nor oral sex with ejaculation, the risk of HIV transmission was zero, for practical purposes; and the chance of syphilis was almost as low. You really don't need testing at all, and neither did your wife--presumably her tests were routine because she is pregnant. Anyway, if you want to lower your anxiety still further, get tested yourself. Ten weeks is plenty of time for both HIV and syphilis testing. You can be certain the results will be negative.
Regards-- HHH, MD