Help me or explain lol

Yackelin

So last night i had sex with my boyfriend but after we got done i had this sharp pain in my stomach that it felt like a cramp couldnt move at all i wanted to cry n i touch my lower stomach and felt like a ball n when i would push on it ill hurt bad 😏😏 first time that happens idk what to do or think why would this happen iam late on my period took a test n came out negative.