My boyfriend pulled out but I’m not sure if he came in me. We did a second round and I swallowed but then for a week i’ve been getting thick like creamy discharge in my panties. when it dries, you cant feel it but its dried and its becomes a yellow stain. i just started getting cramping yesterday and today. under my stomach i have small cramps but mostly my back. it has a sweet sour odor when i pee. what does this mean? am i pregnant?