Am I Pregnant? :: Dark Brown Spotting Followed By Orange/pale Pink

I am currently taking the Rigevidon combined pill on its own and have been for over a year now. I am in a very sexually active relationship and we don't use protection due to me being allergic to the latex and also the fact im on the pill. I am unfortunately one of those very unreliable people when it comes to the pill... I don't take it at the same time every day and I have also missed a day every now and then and as I was rather uneducated on the pill I never set correct times I was meant to come on my period. My boyfriend first came in me the day I was due off my period (1st november), then again on the 6th november, 7th november (by accident) and then on the 17th of november. I know that I forgot to take my pill on the last time he came in me. Anyways, because of being slightly worried I decided to do a pregnancy test late at night on friday the 13 november (negative results ( was very happy) but I've been having a few pregnancy symptoms lately like slight stomach cramps, tender breasts, frequent urination and feeling like im going to be sick in the morning but I haven't actually thrown up yet. So I decided to research and learnt that i had done the test a bit too early and decided to do another test again on the 20th november (in the afternoon) again a negative result. I was happy again that I had a negative result but on the saturday 21st november I went to the toilet around 9pm ish and noticed 3 dark brown spots in my knickers but there wasn't anything coming out when I wiped... Despite being confused I decided to ignore it but then today on the 23rd november when I wiped I found some orange/pale pinkish discharge when I wiped so I had a shower and now there's nothing there...