Does this sound like I might be pregnant?

My period is 4 days late .. but I'm very confused. I had my period a month ago, & 2 weeks after my period I ovulated [had the creamy discharge followed by the egg white, gummy, stretchy discharge], which is all completely & totally normal. He was away so we did not have at that time. But then, about a week & a bit after I had the egg white discharge again, & that's when we had quite a bit. Now, just the other day, even though my period is expected to come, I had the gummy, extremely stretchy discharge again. Then it was a creamy discharge, which is what I usually get before I ovulate. Now it's just sorta milky. I'm sorry if this is all too much information. Now I've been feeling a little nauseous all day, to the point where I can actually feel it coming up & in my throat, again sorry, I know that's really gross. What's going on, I'm very confused. I've been off the pill for almost 4 months & we're currently trying to conceive. Could I be pregnant?