I need help please

Okay so I quit taking the pill in December. I’ve been told the period you get while on it is called withdrawal bleeding. So I had that on the last week of my pills (placebo pills) and then nothing after that. My period was about 15 days late and I think I’m finally getting it today (I’m spotting). Now that I’ve been off the pills for just over a month, is it safe to say this is my “actual” period and my cycle is now back and I can start ttc or is it too soon to be back on a regular cycle? I know the only way to tell if you’re ovulating is to test, I just don’t wanna buy tests and use them if it’s too soon after stopping the pill.