How do i stop my period with the nexplanon implant?!?!?

Okay so I’m supposed to be seeing my boyfriend tomorrow, and next weekend he’s going to sleepover and we wanna get to it but i just can not have period sex, my flow isn’t heavy at all it’s like brown shit and I do sometimes bleed lightly😭🤦🏽‍♀️but still it’s definitely not going to be the same and this would be our first time with each other and i really love him soo wtf do i do😭😭😭i need help ASAP please!