Could i be pregnant , or period coming ?

It's unlikely that this is a symptom of pregnancy. It is more likely a symptom of something else. I would suggest that you take a look at this website for answers - a href="http://www.nlm.nih.gov/medlineplus/ency/article/003146.htm" rel="nofollow"http://www.nlm.nih.gov/medlineplus/ency/…/a