I need help

So I’ve been trying almost all month to conceive

On October 16th I’ve noticed very light spotting that would only come for an hour then it would go away then I started to spot again on the 18th, 19th, and 20th but they all would come and go and (very light spotting ) well today October 21st I started to cramp very badly and I’m very tired and I’m spotting a tad bit more than usual what could this be my ovulation?? I need help

This same thing happened when I was trying to conceive last month (no luck last month so we’re trying this month) but I only started to spot 2 days during my ovulation last month