Ovulation questions

So periods between 26-28days last period 10/01/19

Done the deed cycle day 7

Cycle day 12 had cramps and spotting in my pad was light pink but had heavy creamy discharge (sorry tmi) only the once. Then nothing since just the heavy discharge

On cycle day 18 had lower back pain and cramps low in belly more like pinching sensation on left side

Hoping this is my month

Anyone else done the deed on cycle day 7 and conceived