Can someone please give me their opinion

Had sex on my most fertile day 
Used pull out method 
Having really sharp pulling nagging pain in my left lower uterus side 
It's quick and sometimes radiates to the right side of my uterus 
It's been accompanied by nausea 
And fatigue 
A week before period 
Spotted 2 days ago 
Last night thought I was going to have my AF by the horrible cramps and pain I thought was my cycle 
No period so far today but I still have so much discomfort in my uterus area