Pregnacy Question!!!!!!!!!!!!!!!!!!!!!!…

Okay here goes. Well My last cycle was febuary 28th && im ireggular so missing a cycle is sometimes normal for me but this time i was planing on my cycle coming on time because this week i guess i have been spotting tue. i had a browing or rust colored discharge for maybe 3 hours && then it went way and wed. i got it back for maybe 2 then it went away once again and today i had a lil and sometimes there white or clear discharge just a little. i have been having unprotected but my bf has been pulling out before he bust and all this week i have not nessacrey been in pain but my stomach has not felt the same its like when you know somthings wrong and yesterday i got a sharp feeling kinda in my left side on and off for maybe a hour and every now and then i feel as if i was having cycle cramps or something and my back hurts or well botheres me every now and then iv been this way all week. and iv also had some what of an increase in going to the restroom and yesterday i had gas bad and was kinda constipated for the past two days......is there any chance i could be preg.?