Help!! Discharge

So... I’m freaking out I had my first born on January 11 of this year and he’s almost four months now and I had sex last month we used a condom idk weather he used it right or not and I was still on my period already towards the end of it but I’m breastfeeding not exclusively because I work during the day but my period is 11 days late now and I’m trying to convince myself that it could be everything going on right now and I hadn’t had symptoms but I didn’t with my first either point is this happened today and it’s a lot of it i had only experienced this before during my last pregnancy but...is it really possible that I could be pregnant again?!? Oh and I spotted twice very lightly like I say yes one day no and then one day yes and then nothing last month thinking i was starting my period but did it and now this