CM check and BBT

Glo did say i ovulated two days ago. Been feeling an headache almost two weeks now and was dizzy this morning. Took a bbt as usual but it was 36.1 when normally its 36.4. Did a CM check too and was surprised i could touch my anus. It was very open. Feeling very feverish. Last mp was 2nd of this month, my cycle has been irregular two cycles consecutively but when regular its 31days. Just confused and dont know what is going on in there.