Please answer and read if you can!:)

Hello all! Let me start with my history. I’ve always had irregular periods and bad pms right before my period starts. I have been with my man for three years and we’ve always had unprotected sex I never thought much of it. It was two years before I fell pregnant and I ended up having a missed miscarriage. I had a d&c and recovered fine. My periods also became regular, well I ended up pregnant again this past February and had another missed miscarriage in March. I ended up doing the pill and it was horrible for me. I had to do 2 rounds. Both my babies hearts stopped beating at 9 weeks. The OB told me they can’t run tests until I’ve had a third miscarriage. Fast forward to today’s time I’ve experienced spotting between the 24th-27th. Took a test negative, woke up on the 29th with brown blood and a little bit of red but quickly went away. The brown stayed longer than the red but eventually tapered off. Here I am today with another negative and no bleeding at all or spotting. I’ve already called my doctor and they told me to come in on Wednesday to do an ultrasound and run tests in case there’s anything in my uterus or anything like that. Now my question is. Has anyone experienced this and what was your outcome? Did you end up being pregnant or was it a cyst? Please answer if you can I’m super worried something could be wrong. I’ve experienced horrible mood swings, extreme fatigue, nausea, flatulence, constipation, acne, and bloating. Pretty much the whole 9 yards. Please help me ! I know the doctors are the only ones that’ll know but I need some help putting my mind at ease. Thank y’all in advanced💓🌈