Conditional consent violated

I agreed to have sex, and asked him if he had a condom. He said yes and I waited him to put it on. When everything was alright we started but he immediately went soft and he had to take the condom off. He tried to get hard for a long time but always failed. So I guessed it was not gonna happen. But finally and suddenly, he penetrated me. I was kinda frozen because it was really out of a sudden and I didn’t expect he would suddenly got hard and immediately penetrated…

I was really sad and didn’t know what it was. I knew it’s definitely something wrong, but I hated myself not cautious enough and didn’t make it 100% clear verbally.

I took morning after pill after that. But I bear the side effects and also the risk of STI.

I’ve been SA-ed before by others, and this time I feel something similar, less painful but still offended.