Crazy chart. Crazy Symptoms. Please help...

So yesterday I was 6dpo (according to fertility friend) and i had no symptoms really. In the evening time I started to notice sticky CM. Last night (early morning around 12ish) i started to get really bad cramps and felt nauseous. I went to the bathroom and was able to use it (TMI sorry). I still felt really nauseous so I had to force myself to throw up to get some relief. I threw up a little and felt a little better. This morning I took my temp and had a drastic temp drop below coverline. FF changed my ovulation date and now I’m back to 6dpo. Any thoughts? FYI I attached my chart hopefully you can see. I lost my thermometer while i was on a trip with my husband so, that’s why some dates aren’t there. Thoughts?