Pregnancy possibility ?

I just wanna start off by saying I did recently have a baby august 2022. I didn’t get my first period until December 15 when I stopped breastfeeding. My next period was January 18, I then had unprotected sex with my husband the day after I finished my period on the 23rd.

I then got light pink/ brown spotting for 4 days from January 31st-February 3rd. My lower back was cramping so I thought it was just ovulation. The app says I should have ovulated feb 6-11, and next period was supposed to be feb 17

Now I’m noticing I’m very tired, not even an extra shot of espresso can keep me up. I’m feeling very sensitive to smells which is extremely weird. I notice when I am pregnant I feel symptoms pretty quick. I didn’t think it could be possible but I feel off.