Its something my woman does that makes me want to question her.and that is when the two of us have our little fight or disagreement about something we tend to not talk to each other for a week and in some cases even more then that.but what striked me is the fact that every time she call me after not seeing each other for a little while she's on her period.the thought that come to my mind is have she been screwing somebody since we haven't been talking or seeing each other and then wait to her period to com so I want notice a difference and how she make love to me or any other differences. Now sometime after we haven't talked in a while I tell her daughter to have her call me and she does.this may sound crazy but is this a possible sign of cheating and if so what do I do about it and how to catch her in the act??

Do you track her periods? Are they "on time?"

Actually, a woman who refuses to speak to her partner for as long as a week after they have a disagreement probably isn't someone you want to have a long relationship with. If you were living together and had kids, you'd have to talk. Adults talk and work out differences. Adults agree that sometimes they will disagree. The focus should be on problem-solving.

Maybe she just gets moodier before the period begins? That could explain her not feeling like talking? Actually not talking is another issue... seems childish.

I sense some jealousy in your question... and certainly some trust issues. Figure out what your arguments stem from, as well as the reasons for jealousy and lack of trust. Is it something she is doing, or is it within you based on your past?

Its something my woman does that makes me want to question her.and that is when the two of us have our little fight or disagreement about something we tend to not talk to each other for a week and in some cases even more then that.but what striked me is the fact that everytime she call me after not seeing each other for a little while she's on her period.the thought that come to my mind is have she been screwing somebody since we havent been talking or seeing each other and then wait to her period to com so i want notice a difference and how she make love to me or any other differences. Now sometime after we havent talked in a while i tell her daughter to have her call me and she does.this may sound crazy but is this a possible sign of cheating and if so what do i do about it and how to catch her in the act???
Uh, I can't understand what you're trying to say.
Maybe try to speak in clear sentences, please?

That's one of the first things you get to know about your female, is when her time of the month is, and how she acts when its her time. If that's all your worried about then, pay more attention to her, and learn to communicate better. How old are you?