It is common for breasts and nipples to enlarge in pregnancy but not immediately - it would likely be too soon. I've never heard of anyone being compelled to talk to their bellies except when they have a confirmed pregnancy, and usually not until they can actually feel the baby moving and are showing - at least not until maybe the second trimester if not the third. As for the texture of your skin, it probably has more to do with something like how long you were in the shower - kind of like your fingers ripple when you go swimming for a long time - or humidity or the texture of your bra or something, not a sign of pregnancy.
The others are right - you cannot diagnose pregnancy from symptoms. For one thing, our imaginations run away with us and we can very easily imagine ourselves into symptoms. The temperature thing the nurse told you is insanely ridiculous. Your assessment that you ovulated is a guess at best - it's not a certain thing. And the pill you took could very well cause some side effects because it impacts your hormones, so much of what you are experiencing could just as easily be attributed to the birth control method you used. When you consider all that this one pill can do for you, it's powerful stuff and is bound to also have side effects that impact your body in ways you can't predict unless you are educated when you take it about potential side effects.
