Please pray for me

So I've been on nexplanon for 8 months now because I got it as soon as i could after having my baby. She was 3 month old when I got it.

Anyway my period has been sort of irregular since getting it but I can usually count on it at least every few weeks either 3 to 5 weeks between. I haven't really been tracking it but I had what I thought was the start of it and then nothing.

That one day of bleeding on the 25th was like dark brown blood mixed with stringy discharge which the discharge itself has not stopped. I had sex on Sunday the 16th. Other weird "symptoms" I've had is random dizziness, I also woke up this morning feeling nauseous out of nowhere.

Please yall what are your thoughts also pray for me that I am NOTTTTTT pregnant 😷🙅‍♀️