17dpo, two bfn, weird chart

J
Would love some thoughts on my chart. From the chart it looks like I ovulated on day 16ish, but that was right when we got back from Europe (9 hrs ahead) and had an awful cold/sinus infection. Based on CM and cervical position, I think it's more likely it was day 21 or 22. Even with later ovulation, I'm at 16dpo. Sore boobs, cramping around CD 31 for 3 days, still heavy sensation but not as strong cramping. Very fatigued for about 9 days and waves of nausea (but I sometimes get nauseas if I'm hungry anyway). Mostly not sure about my temps, and if they're strong enough for it to be this month. Took 2 tests so far and both bfn (latest was CD 35). Any thoughts greatly appreciated!!!