Question/need advice.

I was suppose to have my period on the 28th but I never got it. On the 29th at work i started spotting then next day too then the blood just stopped next. I spotting on and off. Before all that I took 4 prego test all came faintly positive, so I am I still prego or do you think I lost it?? I am confused cause today is the april 4th ism having some pains/cramps in belly and lot of gas.