Trying to conceive

I need answers!! 😟😟

Not meaning to shout.

Here's the deal. We're trying to have my third child, his second but I'm still not pregnant.

I've had sore boobs for 2 weeks, hunger increase, fatigue, always tired and yawning.

I got my period on time but it has lasted 3 days. The first day was normal flow. The next 2 days I barely bled. I didnt even wear a maxi pad(Tmi sorry).

I tested numerous times and all are negative. Tested after the 3 day period and still a negative test.

My question is could I still become pregnant soon? I'm all over the place.