Pregnant maybe? Period?? 🤷🏽‍♀️

I had pink and drown discharge for 24-30 hours about two days before my period was due. Then I all of a sudden started bleeding on the day my period should have arrived and bleed dark red at first then bright red for another maybe 12-24 hours on and off heavy, but not like my normal period (only heady for like 8 hours maybe). I stoped and then spottened on and off for another 48 hours and now it’s all gone. It ended again with some brownish/pinkish blood/discharge which I have never had before. This has never happened to me before I need advice 🤷🏽‍♀️ I also had strange string like clots stuff that was more like pink and black mucus. Never have I experienced something like this before. My period is usually 5-7 days long and hard! no stop! lots of big clots and just nasty (tmi I’m sorry). Usually Super+ Tampons every couple 2 hours or less and this time it’s nothing like that. We have been TTC (trying to conceive) since September, but nothing like this has happened. I thought I was pregnant because I had sore and very swollen breast, cramps for like 4 days before this began and the first 48 hours of all of this, nausea, emotional, and headaches. I now only have swollen breast, a little nausea on and off, super moody, and emotional. What the hell is wrong? I took a digital test last night a couple hours after I saw my last spots of blood and it came back negative. I don’t know what to do anymore. I hate going to the doctor and I would like to know if anyone else has experienced something like this? I swear I’m going crazy!!! Can’t stop crying I’m so frustrated.