When will I ovulate ?two different cycle lengths

[Meganmae]

Hi, I had a mc in dec, since then two periods one 29 days one 35 , now I'm calender day 3 in to my second cycle and bit confused when to start testing for ovulation, last month it was day 19, before mc I was 28 days , I'm stuck?!

 

[floborg]

I would definitely start using ovulation tests and maybe also charting?