I have clear gooey discharge , I've been Throwing up a little , I have headaches and I can't remember my last period. Me and my boyfriend were messing around last week and he rubbed his penis against my vagina... I was reading precum can still get you pregnant Is there a chance I might be pregnant even of his sperm count is low?

Depends on how he rubbed, but it was close enough there is a possibility.

Now in one week, no you should not be sick at your stomach or most of the other signs you named yet. It sounds more like a flu or infection of some sort.

Next you need to know when your periods are, to track them esp when you are starting to have sex. So now you wait a few weeks and see if you have a period.