PREGNANT?!?!? Cramps and discharge!

Early June my boyfriend and I were fooling around. I thought my period was over, but apparently I was on my last day and he put himself inside me for a moment before taking himself out. (No condom and nowhere near ejaculation). Well, 3 1/2 - 4 weeks ago, we were fooling around again and before he got the condom on, he put himself inside me again for a short bit and took himself out. He swears that he was focused and POSITIVE that nothing came out, but I know guys can’t tell if they release pre-cum sometimes.

My last period which was about two weeks ago, came on time and normally I have a very heavy flow. The first day was heavy, second day was heavy, third day was probably the amount of an average woman, the fourth was VERY light and the fifth was barely there at all.

Yesterday I started having light cramps and noticed a brown, odorless discharge on my panties. Today, too. It’s dark brown and solid-mushy. I’m nervous. I’m stressing like crazy.

Could I pregnant? Would I have signs like that this early? Or is this just stuff that often happens a week before your period?

I’m scared and please, no lectures about unprotected sex.

I’m asking advice on what you think is happening, not what I’ve done wrong. Thanks.

PLEASE RESPOND with everything and anything that you know that can help!