Surge on day 7-8 possible???

Shelby

I just started TTC I also just got my birth control out a couple weeks ago. My boyfriend got home on January 31st. I had nexplanon if that makes a difference but according to the strips I had higher LH on day 8 and it went down after that? Should I keep testing Lh or did I miss it? Started my period / day 1 on Jan 25th - Jan 29.

This is all so new to me I’m just trying to get informed since most surges haven’t happened yet..