Could i be pregnant again?!

Bre
I gave birth feb 2oth . Me and my so had sex around 4 week pp . I wasn't on birth control he pulled out but it slipped back in. Shortly after i got on the patch . While on patch i started spoting . On and off . I often forget to change my patch and me and my so have sex alot ... for the last 3 weeks if been really sick to my stomach, peeing a little more . Very sleepy. Not eating as much very emotional. I am breast feeding . And also the last time we had sex my stomach got realy tight and crampy right after for like 10 mins . Don't wanna wast money on test or scared the shit out of my so if i dont have to please help * no full blown period other than spoting but i didnt even need pads i could just use a panties liner also lots of white creamy discharge and gassy *