CD 28,29,30 Spottting. Is it implantation?

Stacie • Engaged. 💍 Stay at home mom 5 year old son due any day now with #2

So I have a 32-33 average cycle. Most occuring is 35,36 days. I wasn't tracking bbt or opks this month so I have no idea when I ovulated but I've been feeling a little nasueated and fatigued since after I started spotting.