8DPO with Cold symptoms?

Destiny

ovulation was on January 4th, we BD the 4th, 5th, 7th, 8th, and 9th. currently I am 8DPO, yesterday throughout the day I was nauseous on and off, and was experiencing light cramps, a backache, and a sinus headache. today I woke up with a nasty cough resembling a cold, along with extreme nausea. has anyone experienced cold or flu like symptoms before getting a BFP?