Missed period negative pregnancy test

Hello Ladies, I’m fairly new here. So here’s a little background on my situation. I had the Mirena IUD for almost a year and decided to have it removed in October of 2020, my periods started coming in regularly by January. I have not missed any period since then. Anyway I’ve been TTC as soon as I removed my IUD in October with no success. Now I understand that everyone’s body is different. The hormones might still be in my body who knows. But anyway I’m 17 days late on my period I feel no symptoms of any sort. I’ve taken several pregnancy test (5) all negative btw. I do have some pelvic discomfort but that started before my missed period. Has anyone experienced this before if so please share your experience. I really hope I’m pregnant but I’m sure it’s not that. I don’t want to get excited for nothing. Also I went to the ER for the pelvic pain as it was very uncomfortable and painful of course. It’s like every time I take a step it applies pressure to my pelvic area and feels sore/tender. ER ruled out pregnancy via blood work and ultrasound. This was a day before my period was due. They said I might have PCOS to follow up with my PCP or Gyn. My PCP says she thinks it’s not PCOS because I have kids. I don’t have an appointment with the gynecologist until July 6th. I’m desperate to know what’s going on 😭 any one have any ideas or suggestions. TIA