BBT chart looks strange


Heya, I know I started logging my bbt late but is it okay if my temperature is the same for days in a row, my cycles aren't very regular and I took a test today and it's negative, I want a baby so badly but I don't know what more I can do, I literally can't find ovulation tests anywhere and in my country it costs an arm and a leg just for Amazon delivery fees,please help me out with some advice, my fiance and I have been doing the baby dance every second day since my period ended so I don't miss my fertile window because I don't know when I ovulate, this weekend I'm going to get another thermometer with more details, hopefully that works, I would appreciate any ttc advice, I've done so much research but it won't hurt to learn more.