HELP ME

Ok so I just need some advice I literally been driving myself crazy about this 😭😭 .. So I have a boyfriend we have been dealing with each other for years now .. Story time so I had a period in the first week of december .. We broke up for a few days and On the 10th basically december 11th I had sex with an ex and he nutted in me I took a Plan B the next day on the 12th .. I end up having sex with my boyfriend the 15th/16th and so on and of course we didn’t use a condom and he’s been nutting in me ever since . Now My ovulation date ( stated by the glow app ) would’ve been december 14th .. So towards the end of december around new years till like the 4/5 of january I started my period well I think .. For about 5-7 days from december to january .. It was more spotting pinkish/brown discharge no smell then My I noticed around the time my period typically starts ( stated by the glow app ) it never came and I noticed pregnant signs and symptoms and I tested for 2 weeks nothing then last friday I took a test and it came back positive.. I’m just curious Am I pregnant by my boyfriend or my ex? 🥴