*Scared* someone please give advise?

Im going to try to make this fast. I had unprotected , about 5 days later i started having a light pink discharge. I had already looked into implantation bleeding so i became excited. the next two or three days i continued to only have a discharge of light pink or either a brownish color. The discharge or spotting began to slow down so i figured it was about to stop. The next day (day 4) i began to bleed again, enough to need a panty liner but thats it but it was red, not bright red but like a dingy red or dark red. I figured maybe this was ok to. Day 5 and 6 color blood was still red and sometimes bright with a little bit of what seemed like clots. I had a few days of small cramping during those 6 days but they were faint and not often in my lower stomach, I also had mild headaches on and off just about each day. Well today (day 7) I really thought the spoting had stopped but by the end of the night I had spots of red again, Ive also had a tugging feeling in my right side and a little in my left and a sort of cramping feeling in my lower stomach. Well of course I reserched it and the topic of ectopic pregnancy came up. Now im pretty scared that either I never was pregnant, was and maybe it didnt go through, or im going through the ectopic pregnancy bc of the side pains. I have not had my period yet. Also my cycle has never been like this. Im usually very normal except the time i stopped my bc pills and I bled for like 7 days and that was heavy (very)..... sorry for so much writting, can someone please tell me something ?