Pre cum can get you pregant
it all depends if you were ovulating at that time.
In general when you are ovulating you will notice you get a lot more turned on and your secretions are a lot more runny.
So, I just had a baby 1 month ago and we had sex 3 weeks after I had the baby and he didn't cum, but I haven't got my period. Could I be pregnant? Also, I'm having a clear discharge.