Missed period and venting

My period is late by almost a week. Not the first time though. Before my period was on time all the time then at work I started working with more women. But now I haven't been around many women. My fiance and I been sexually active but not that much like maybe 3 times in the past month. My nipples hurt so bad and my breasts feel even heavier than normal. That is thonly sign of like my period really. I haven't really been eating much because everything sounds gross.and my head always hurts but that is most likely from my hair being too heavy. But I dont want to take a test and get another negative like all the other times. I haven't taken any tests I figured I'll just keep waiting and if I dont get my period next month then I'll test.. I just really dont want to see another negative.. it hurts so much.