Help please! Could I be pregnant? TMI

Hello ladies,

I REALLY need some advice/thoughts here! This is my situation;

I am a 19y/o female and have been having periods since age 11. They used to be pretty irregular, but they have been pretty much spot on (30-32 days) for about 2 years now. I recently became sexually active with my boyfriend. I had my period July 13th-18th this past July. Then, exactly 2 weeks after, I had 5 days of light but consistent bleeding, (July 30-Aug 3rd). The color was brownish with some red blood. I have NEVER experienced mid cycle or ovulation bleeding. I went to the doctor and they performed an exam and ultrasound and everything was normal. So, I wrote it off and moved on. I was due for my next period on August 13th ish. On August 16th my boyfriend and I had unprotected sex because I was seemingly so close to my period, my chances of getting pregnant were virtually zero, (we only use condoms, I am not on birth control). Yes I know this is rolling the dice. Please refrain from judgements.

HOWEVER. My period never came after this. It is currently August 28th and nothing.

So here is my concern. That light bleeding for 5 days WAS in fact my menstrual period, it just came early for whatever reason. Two weeks after that would have been August 17th, which is when I would have ovulated if this is the case. I had unprotected sex on the 16th--unknowingly this was essentially the PERFECT time to try and conceive. The day after the sex I had the signature egg white cervical mucus for about 2 days which did make me feel like I was ovulating. Fast forward to two days ago, the 26th, I had off an on cramping that was fairly mild and felt more like twitching or pulling. That lasted until yesterday the 27th. If in fact I was ovulating, today the 28th would be 11DPO. I got a BFN hpt this morning but I know 11DPO is early for some. I am now experiencing frequent bathroom trips and creamy white CM. My breasts are sore but not as sore as they usually are before AF.

I know that was a lot guys but I'm super desperate. What do you think? Could I be pregnant? What are your experiences? Should I keep testing? What brand? (While your at it has anyone ever got false postive with equate? I get a line every time but only on those tests.)

Thank you so much guys! Xxxx

Edit: both me and my bf agree we shouldn't have done it unprotected. Never smart if youre not ready.