Ok I got a question. me and my husband are spending a night at my moms! I just got off of work and…

Ok I got a question. me and my husband are spending a night at my moms! I just got off of work and got here around 12:30. when I got here I was holding my son. well while holding him I found two baby bugs in his hair. it pissed me off!! but 5 mom after that he started crying and didn't stop till 30 min later. we tried giving his bottle and that didn't work. and I tried rocking him back and forth and that didn't work. and on top of that my head was hurting badly. he is finally asleep but what do I do if this happens again? did he cry cause of the bugs or was it something else???