Possibly pregnant????

So, me and my boyfriend of almost a year are in a LDR until May. I was down there for spring break and he have been TTC. After having intercourse we were bummed out to find my period had come. But it was really light, no clotting (Mine are usually heavy and a lot of clotting). I've been off for almost 2 weeks, no intercourse since March 3 when I started my period. I have been nauseous in the morning, emotional, bad lower cramps, frequently urinating, and a clear discharge. Is it even possible to to pregnant?