19, me and my partner has been practicing the rhythm method for all time now (he refuses to wear a condom because it's not as satisfactory) and we did it twice last week (two weeks after my period) and i am expecting my next period this friday but i have been very stressed out, i crave a lot of food but not weird ones (such as chocolate cake, ice cream, etc) and starting from two days ago my vagina has been itching or maybe soreness? i don't know when i checked there seems to be some reddish skin thing expanding up to the vaginal area but (sorry for grossing out) i was still able to stick my finger in just to make sure the hole hasn't closed up completely. this vaginal itching has never happened to me before, is this a sign of pregnancy? please help!