Getting off the pill?

I was on lo loestrin fe recently and I didn't have a period while on the pill I stopped taking the pill because I'm ttc and have not had a period yet June 24th was the last day I took my pill and no period yet. I have had some headaches and gas some bloating and last night and today I noticed my nipples were sore. Is it possible to get pregnant right after I got off the pill? If so could I test and it be positive I was going to wait until I had a cycle before trying but now it's making me wonder if I'm pregnant. Has anyone had these side effects after getting off birth control? Should I test or wait it out?