probably in my head...

I'm two months into ttc, just got nexplanon out in feb, so I'm feeling the hormonal changes really strongly. Noticed all of the signs of ovulation this month (egg white cm, cervix position, one sided cramping, etc) and BD'd within the window. I'm now three days past ovulation and have seen my body changing back (creamy cm, etc) but my boobs are still crazy sensitive and today they are huge! Like spilling out of my regular-wear-most-of-the-time-bra huge. I'm also getting awful leg cramps, which happened a ton with my first two pregnancies. There's no way I could be feeling early symptoms yet, right? This has to be just post-ovulation hormones?