My periods have always been consistent even though I get them every 42 days. I chart my periods to know when I will be expecting to miss a month. I missed my period in November, which is normal. I didn't get my period for the month of December and now it's going on to February. I'm still waiting for my period to come. Here are some signs I have noticed:Slight headachesFrequent urination (it's not a little every time.)Mood swingsNausea (not everyday, and it comes and goes.)Fatigue (could be because I just went back to school, and I'm trying to balance school, work and family)CravingsMy husband is sure that I'm pregnant, but I've been taking pregnancy tests every week. I've heard of negative tests, but could it be possible to have it this late?! I have a doctor's appointment with my OBGYN, but they don't have an opening until the beginning of March. I've been pregnant before with my son, and I had really bad morning sickness, and all of the symptoms were enhanced. All of those symptoms above, I try to not think about them all of the time because I didn't know if my mind is just messing with me or am I really pregnant? I've never had a UTI or ovarian cysts, and from what I've been reading it could be a possibility too?