Any insight?

Here is the breakdown

Only birth control is pull out method

My cycles range from cd27 - cd33 today is cd38

Lmp june 20-25 (my af is normally 3 days change a pad every 3 hours heavy no clots, 2nd to last day med flow, till last day it tapers off)

BD 29th (no birth control)

BD july 10,12, 22 (no birth control on 22nd)

Spotting 12-15 light light pink-brown. Nothing enough for a pad just when i wiped.

Spotting 26th pink tinge ok thought af was coming.

Spotting 28th brown, no af. (Today)

Im over weight 230.

Im 6 months PP

Ive had all normal periods all 5 months till now.

Negative hpt test

Please anyone going through this or has?