Should I just assume that I am🤔

Here’s my glow

My periods are usually spot on with the app. I feel a slight pinching sensation down there, and I’ve been having period like cramps since I was supposed to start my period. Somewhere in the first week of this month I had sit-up like cramping in my abdomen. I threw up on the morning of the 16th (I had a greasy Steak ‘n Shake frisco melt the night before). I have been experiencing non stop gas since about the second half of this month, like I’m talking GAS GAS😐 The one thing I do remember from my first pregnancy is GAS. Besides that, I didn’t have any symptoms with my son that I actually noticed with me being oblivious/in denial for a few months lol I don’t think I’m getting my period but I tested negative twice the other day (early in the morning and in the afternoon). All these feelings never happen and I can’t help but think I definitely am and I’m just too early. Anybody have an idea based on the picture above when conception was likely to happen? That might help me understand more about when the best time to test is