Plan B got me skinny?!

Okay so i’ve recently been getting told that i’ve lost weight and look skinnier now by my mom and friends. But i hadn’t really noticed much, after i left my old job where i had to wear uniforms i noticed them fitting loose. During that time me and my boyfriend of nearly 3 years have been having more intercourses. Which had a couple of bad turnouts where i had to take Plan B twice in less than a month probably and I know that is not good. But other than that i haven’t been doing anything that keeps me active enough. i feel like i eat like i usually do. But ive been feeling good and everyone has been making a comment on it and i’m starting to overthink and feel like my body doesn’t look good.