I am not sure if it is too soon to take a pregnancy test?

I am 18 years old. I was supposed to get my period the day before the 1st or the 1st of this month. But i never got it still to this day. I had unprotected sex with my boyfriend on the 5th and 8th of July and he came inside me both times. I am not on any type of birth control what so ever! I have no std's or anything of the sort because I got tested and everything was negative. And I have had all the early pregnancy symptoms. I have been extremely tired, I sleep a lot more lately because I am so tired. My breasts have been very tender. And the circle around my nipples is looking darker. I have been very nauseous. I have had backaches and headaches. I had this very weird spotting and discharge for a couple days last week, I'm pretty sure it was implantation bleeding. I have been very bloated and get irritated a lot easier at just the little things. I've had slight cramping on my right side near my ovaries. For the last 3 days I have had this weird discharge. It is clear/white and looks almost like jelly. It was in clumps at first whenever I would wipe after using the bathroom. But today and last night it has been the same stretchy clear/white discharge but now it is like clumps but it is now enough to were it is getting on my underwear, it's not just when I wipe now. It has no smell but is very strange. I am not sure if it is too soon to take a pregnancy test? But if you know of any advice for me, I'd love to hear it. I am in a tight spot right now and I"m beginning to truely worry that I am pregnant. Could I be pregnant? As many responses as possible would be great! THANK YOU!!! Just really need some advice cause I'm not sure what to do yet.