Ovulation help

So I normally have a 35 day cycle and got a positive ovulation test on day 23 (which is normal for me) but I was also sick with a cold. I started getting cramps around day 28 ( temp dropped as well this day) and only has opk strips so used one and it was very positive so I tested for a 6 days til day 34 and got very positive opks. Tested pregnancy test and it's a negative. Any suggestions to what is going on I'm on day 35 and no period but cramps agains but temp is staying higher.