Im only just in my third trimester, about 29 weeks, and for the past couple of days my left nipple has been really tingling! I think its my nipple, or right at the top of my boob! Im scared that its nothing to do with pregnancy and ive contracted some horrible disease, ive tried googling but didnt really find anything! Is this normal? And why is it only in the one? I havent had any leaking or anything at all so far so i dont know what the hell it is but i am turning into a hypochondriac and need reassurance!