implantation bleeding or something else

[hipster123]

Hey everyone im 22 and new to this site and ive never been pregnant and ive been with my bf for two and a half years and havent used condoms much im to scared to talk to my mom about pregnancy and stuff like that Ive always had irregular periods but here recently I havent had one since about November and im not pregnant but within the last week I had brown spotting for about a day or two and it stopped for a day or two but now for the last three our four days its was brown at first then a light pink then kind of a brighter red and now brown again so i have a home pregnancy test but Im not sure if I should use it now while im bleeding or whatever this is so im gonna take the test when im done to see If im pregnant but I was wondering will implantation bleeding start brown the pink then brighter pink then back to brown I did have a cramp or two yesterday I believe so I would like some advice or answers as to wat is goin on im to scared to go to a doctor