Me and my bf have been having alot of unprtected sex lately were not ttc but also not actively trying to prevent it from happening either as i approched my period i noticed some things that were different about my 'period symptoms' such as my breasts being sore and feeling fatigued and achy. I know that all these can be period symptoms so i just assumed that my period was altering slightly however the day before my period was due to start i started bleeding a light pinkish brown colour that was only really apparent when i wiped this continued for the next three days and the it stopped altogether i normaly have quite a heavy flow so decidedto do some internet searches snd came acrossabouimplantatiot implantation bleeding and thought that might be what i experianced so i took a pregnancy test and was left confused when the result left me with what looks like a very faint possative line. What should i do next?