6Weeks and 1day, HELP?

Destiny • 1 little one and 1 cooking
Ok i have a question , my boyfriend still wants to have sex .. i be in the mood every now and then .. tonight i was all of a sudden in the mood , so i agreed to it . Afterwards i have this very bad pain in my stomach , i still have it . Can't stand all the way up or lay how i want to because it hurts to bad . DID I DO SOMETHING WRONG ? CAN WE STILL HAVE SEX?