Could it be???

My husband and I want another baby I’m 3mpp we want to try for a boy. My husband and I aren’t using protection because my thinking is it will happen when it happens protected or not. Well I ovulated around yesterday and Saturday 11/4-11/5 and we had sex both days. I have been feeling nauseous the past 3 days and was having some mild cramping on my left side down low. Could this be signs of implantation? How soon did implantation happen with y’all? Advice, opinions, and thoughts are very much appreciated!