early preg signs

Preet
Hello, 
I am 26 years old and my husband and I have been ttc for about 5 months now. This last month was the first time I've actually used opk and Preseed. We BD all throughout my fertile period and believe I am now about 7DPO. 
But since two days ago I have had a few symptoms that I'm hoping are not all in my head. I have been getting very vivid scary dreams, even if I take a nap in the afternoon I wake up and can remember the bad dream. I have pinching (twitching) like sensation on my lower abdomen; sometimes left sometimes right. This morning i woke up and had a little bit of spotting. I took a preg test and it was BFN. I have also had the urge to urinate more since today. 
Anyone else have these Types of symptoms so soon? Or am I thinking too much into this??

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