Still no period help!

Martha
I have ALWAYS had regular periods! Never more or less than 27-32 days. This month I noticed my temps all over the place but it was only my second month temping. I am 41 days now! Took 2 cheapie pg tests last week and both negative. I've had symptoms and period like cramps on and off but still nothing. I am broke out like crazy and am moody and crying and had waves of nausea all day! I don't feel pregnant but what else could it be?! I have endo but everything else checks out fine. My fear is an ovarian cyst. Dr says I sing have PCOS but I have so many signs that point to that! I'm just so tired of it all!!! The one thing I always had going for me was regular periods but now that's gone too 😢 suggestions please!