Need help, How did you feel? I know this is long, but I need oppinions please!?

I think I may be pregnant, but I dont want to get my hopes high like all of the other months. December I started my period on the usual 4th of the month and it ended on the 10th. I had unprotected with fiance and he d in me on the 11, 12, 13, 14, and 15. About a week after this I began to have sore and slight cramping. I started what I thought was another period on the 26 of December again and it lasted til the 1. My periods are clockwork everymonth, on time every time, and I dont know if its because my last period carried onto this month or what, but my period is still delayed.I tested on the 2 of January and the fourth of January and both tests were negative. I dont know if I tested to soon or what. On the seventh of the month I used the restroom and when I wiped I notices 1-2 small clumps of dark red/brown blood and nothing else after that. I have had slight cramps right above my pelvic bone and some nausea. Everyday it feels like I started but nothing comes. Today I went to the bathroom thinking I started and noticed off white/ yellow discharge, not slimy or stretchy. Its not an infection as I just had a yearly exam in November, and neither me or my fiance have an Std. Does this sound like a pregnancy? I cant get into my OBGYN til the end of February