Chances of being pregnant

Before anyone says anything yes I am planning on taking 2 different tests, and yes, I do know that you definitely can get pregnant on the pill, and yes I am very diligent about taking it. I’m just wondering if I’m psyching myself out.

I had my period on the week of January 22nd. I was supposed to get it on February 13th but I decided to skip it this month with my pack. In that time, I had unprotected sex 3 or 4 times, and from what I can recall I believe he only came in me once or twice. Since going on the pill, my breasts have been sore (6 months) but it stopped around when I was meant to get my period. My breasts are now sore again. Since then I’ve been crying constantly, I got sick, (post nasal drip) my stomach looks bigger and I’ve been gaining weight. I haven’t had morning sickness. I just want a second opinion. Thank you

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