Is it considered sexual assault?

thatawkwardblob
TRIGGER WARNING: if you are sensitive to sexual assault or rape please do not read this. 
So I'm gonna tell you all what happens we to me and I've been wondering what it would be classified as. This is really hard for me so please don't judge or say anything too harsh.
When I was around 3 or 4, I was at my cousin's house. I was going down to the basement with him because he said that there was some stuffed animals. When I got down there, he persuaded me to pull down my pants. I did, because I didn't really know what to think. Then, he pulled out his penis. Then he asked if he could just touch it to my lower regions. I said no. He kept trying to pressure me and said that he'd give me a stuffed animal if I did. I kept saying no and he almost forced himself onto me. The reason he stopped was because I had to leave. Nothing really touched anything, except he did touch my chest.
I'm sorry this is so long but I've been holding onto this for too long and I just need to know. If you have anything to say please say it. Thank you.