Am I tricking myself?

Hello all, I know I can trust you guys to be honest with me. I had my first round of clomid last month May 22-26, now for the past week or so I've been nauseous (along with some vomiting, but ONLY at night), I've had period-like cramps with some pulling at my belly button, and my nipples are sore, and I've been sleeping until like 10/11 in the morning when normally I don't sleep past 8! Am I driving myself crazy? Is it all in my head? It's probably too early to test right? If I had a blood test done would it be too early?