4dpo symptoms???

Monica • Police wife. Mom. Prolife. Wiccan. Bisexual.
This is our 17th cycle and final natural cycle before we start fertility treatments. Well on Wednesday I ovulated and we did the deed Monday, Tuesday and Wednesday. Yesterday I woke up feeling like I was starting to get the flu and today (4dpo) it's worse. I hurt all over, headache, sore throats, bloated and gassy, hungry, sore boobs, and I'm slightly feverish. Im just wondering if these could be really early symptoms or if I'm just going crazy!