Implantation bleeding or period

Well I posted about this earlier. I had brown and red blood this morning when I wiped. I assumed it was AF and I don't know if it really was or not. 
​I had sex on the 5,6,7,8 of July. Multiple times a day with no form of birth control (withdrawal, condom,etc.) I'm currently 10 dpo. I ovulated on the 6th. 
​Anywho, I have been having nausea, increased hunger, exhaustion, irritability, all that fun stuff.  I never get PMS stmptoms like this and got my hopes up about being pregnant. I took 2 tests about 4 days ago and both were negative. 
​Also, I woke up this morning and my nausea was even worse.  I went to bathroom and realized there was blood when I wiped. I thought it was my period but the coloring is off and there is no clotting like there normally is. I've been having cramps like a period also. It's moderately heavy like my period but it stopped slightly this evening. But is back to normal
​I'm hoping this is implantation, but I just need second opinions... I'm losing hope here.