Exremley tired cant get enough sleep, naseaus feeling, wierd

hello, I have been feeling tired for the last two weeks, I mean extremley tired. My period last month was 2 weeks late and when I did get it it was wierd thr first day it was bright red orangish and it lasted 3-4 days but it wasnt my normal heavy 7-8 day period. My regular period is now 7 days late. My nipples hurt to touch them or even press on them.I also have a wierd sensation in my lower stomach and very light cramping. Its been so long since my last pregancy with my daughter and I didnt know I was preg till i was 2 1/2 months along so I am not sure what the early signs where I know I had a irregluar period before. We have been trying for a year now but I am afraid the test would be negitive. any help???