I came off my pill in April and have had 2 periods since, one in May and one in June, about 5 weeks apart. It’s now 6 weeks since my last period started and all I’ve had is a few days light spotting. I’ve took tests and they say negative... only thing I can think of is travelling possibly delaying this... how am I supposed to know when AF is going to come? And how do I know when to start taking OPK’s to know when I’m ovulating?

Any help appreciated