CONFUSED🤔

I have irreglar periods so I don’t really know the exact dates when I start. However I had a MC in april & then had my first period in may, had period in june… missed july and august, had a period september, october and november and now my period is missing. I have had cramping and even to the point where I actually thought I started my period but it was eggwhite discharge. My boobs are very sensitive to. Could this be me being pregnant or just late period? I took a pregnancy test about a week ago and it was negative.