Af is late..

Last month af came about on time, but I was only on for 2 days, the bleeding seemed regular but the days didnt. After the second day I was just spotting and it was more like a brownish colour .. This month ; a few days ago I used the washroom and when I wiped myself it was a little red dot , so I thought af was coming since I was due to have one, but today is my second day of being late . And I haven't had any symptoms .. Usually I cramp badly before af comes and I haven't had a cramp! Any advice ? I already took 2 pregnancy tests last month early and got disappointed so I really don't wanna lose hope this time or jinx it !!