Weird gross “period” and nausea

So I just read a post similar to mine and it’s almost the exact same thing I’m going through .. I’ve always had very irregular periods but they’ve always been either super heavy and last 3 days or a regular flow and lasted a week. This month I had horrible cramps and checked my app and seen I should start the next day. So the next day I have this very thick disgusting black discharge. I’ve never had anything like that.. it was almost like a chunky dry blood.. but anyways I just went ahead and prepared with a tampon. The tampon was so uncomfortable from the start. My vagina was so dry and it just hurt so bad. Well I never started to actually bleed but I had that same black chunky discharge for 2 days and then it stopped. I never actually bled or anything and now I have had the weirdest eating habits. One day I’m eating pizza and cookies and the next I’m fine with not eating at all. With my period being so weird and I’m completely used to skipping a period one month. But every time I take a test it’s negative. I do have a two year old so I know what it’s like being pregnant and since last Thursday I’ve had horrible nausea every morning and I don’t want to take a test if I’m just over thinking so please helpppp!