TTC Support needed

I need some support I guess. I’ve been with my husband for 4 years and we finally tied the knot last November. We have been TTC since April without any luck. I am now 3 days late for my period and I’ve taken 2 pregnancy tests within days apart and they are both saying negative. No pains to even suggest my period is arriving anytime soon. For the last week at night I have been feeling very nauseous and vomited a couple of times. Even cooking dinner last night I had to run to the bathroom to vomit. This isn’t my 1st time trying to get pregnant as I have 3 adult children to previous partner and now doing all this testing to see if I’m ovulating and watching my periods like a hawk it’s all new to me. My last pregnancies I fell pregnant so easy. Maybe it’s my age I’m 42 and my husband is 34 (he has no children). I guess I’m just needing some encouragement or support cause I’m not sure what I’m feeling atm

Us on our wedding day