Giving Up :( :( What do u guys think i should do ?

Here I was, thinking that I'd be lucky this month. Sigh, I had a 7 day period in April, 4days in May.

In June it came for abt 2/3 days medium flow. In July only 2days then spotting for the 7th & 8th. Now in August it started July 31st (very lightly) no flow after the 2nd of August. Spotting on the 4th nd then brown stuff in my undies. Been getting cramps from the 5th (intense) but now very mild. And my boobs r kinda tender then every day I feel nauseous and tired. Been very sensitive. The simplest stuff av me crying. I was so confident taking the test this morning. But only got a BFN. I just feel like breaking down :(