Its okay. Your body " down there " is sensitive obviously since your pregnant now. Baby is fine, eat something and if he moves around/kicks 10 times before 2 hours like normal, theres nothing to worry about :) still bring it up to your obgyn next time though.
its not alarming but u should definetely talk to your doc about it.
Ok . So thats suppose to happen more than once ?
Yes, you should be just find. very common to bleed after sex