Help!

So me and the hubby are TTC. I missed my period by over a week. Now, my period is usually extreme. I have extreme symptoms before my period and during. it last about 5 days of intense bleeding with big and small clots a lot of cramping mood swings and I'm ridiculously tired the whole time. However I missed my period this month until Tuesday when I went to the bathroom and I had a light brown discharge then a light pink discharge and then for me a I started to lightly bleed. This whole thing lasted for 48 hours and then stopped. Any thoughts? And also I am having nausea without vomiting, fuller breast still. mild cramping. lower back pain for no reason. Any thoughts?