Hi Jhoiz,
I am new in this forum and I hope you don't mind me voicing out my opinon.
Distant relationship is really difficult. It is always best that the two of you communicate even when he is away, if not, then a lot of worries gets to your head. My own opinion only is if he says he was sorry and promised not to do it again, give him a chance, that is if you really love him. Tell him honestly what you are feeling and that you need his assurance on the relationship. I am married myself and probably would be extremely upset with my husband if he does such things. My husband decided to bring us here so we can be together and eliminates the anxiety of being apart. I know that some couples have to sacrifies being together for their future and one truly needs trust to go through it. In fact I knew a couple who had similar situation, and they were able to patch things up.
If he is most cooperative that is good and If not then just let go. I do not believe in wasting your time with someone who does not honour you or respect you.
The most important thing is to be strong for your own sake and your child.
Joy