Really scared

So I know everyone asks these sorts of questions. I never thought I’d be the one to ask this. I know I need to take a pregnancy test and y’all don’t know for sure if I’m pregnant any more than I do.

However... I just need to hear people’s opinions and help. I can’t talk to my mother about this because she doesn’t approve in my choice of partner. So she definitely wouldn’t approve that we’re having sex or that I could be pregnant. This may be a little TMI - so you’ve been warned.

So backstory - I’ve been on and off birth control pills because the ones I was taking were making me nauseous and have severe migraines. I stopped taking them about two weeks before my fiancé and I had sex. The condom broke while he was inside me. I did not see any precum, he had not cum already, and as soon as we realized it broke we replaced it with a new one immediately (I think probably seconds after it broke). We continued having sex etc. that was on the 31st. So almost two weeks ago. I started taking my birth control again on Tuesday the 3rd.

Monday the 9th I start feeling nauseous and the feeling remained until Wednesday at about 6am. I did throw up Tuesday am but I take my birth control at 8pm the night before. My birth control has made me nauseous in the past especially if I don’t eat something with it so I stopped taking it. Monday was the last dose I took. So I was back on it for less than a week. I’ve stopped taking it and don’t plan on taking it again until I talk to my doctor about it.

My period is already really really off because I have PCOS so I only get it like once a year. Because of the on and off birth control ive been taking the last time I got it was the last time I had been taking the birth control. Which was more than a month ago. This app says it’s late by 28 days. That’s not really a surprise. My last one before this was late by over 200 days.

My question I guess is how likely do y’all think it is that the light bleeding I’m experiencing now is a light period bc of the birth control I just stopped (bc always causes my period to come). Or if you think it’s implantation bleeding...? Please help