hi i am 23 and am sexually active. Here's the thing. Last month me and my boyfriend had unprotected sex and my period was one day late. Afterwards i starting craving for milk shakes. I took a pregnancy test and it was negative. This month on the fifth and sixth we had unprotected sex. My period was two days late and its down now are at least it should be. I had been feeling bad for about one week now but only at night time. I finally started spotting on the 22nd with no cramps or anything. Im am usually very heavy on my second day but this time i wasn't. I haven't bleed since. I am just spotting every now and then which is unusual. On yesterday i had dark brown blood then later on that day i had nothing. today i had nothing but at work today i got a sharp pain on the left side of my stomach. now tonight i just feel nauseated like every night since this has started happening. what can this be.

gas, using the restroom #2 more than usual, sharp pains, nausea, light headaches, first wk i just noticed i was crying for nothing really, please just give me some insight could i be pregnant