Twitchy feeling ???

I am just getting off of myfertile window and am supposed to start jan 9th. I am very irregular on my periods. But I have been having very sore boobs with the veins protruding (tmi) and my actual arreolas are swollen and puffy. I also have been having twitchy feelings right above my pubic bone like cramps but not painful. My husband and I are Ttc but I know it would be too soon to have symptoms of pregnancy. Could anyone tell me if they have experienced this? Or what you think may be causing this? Thanks In advance!