Symptoms, implantation

Shay
(Warning, long) Just wondering if anyone is experiencing the same thing as me, and if it seems like I should get a bfp soon. One week after having unprotected sex I woke up one morning absoloutly exhausted unable to get through the day without a nap. I also started to get a headache that would last all day and night. Just a dull pain.  Fast forward to this Wednesday and I was at class and went to the bathroom, wiped, and there was brown rust colored spotting. That was the only time I noticed spotting. Headache is still here on and off and have noticed dizzy spells. My temperature had also dropped by a whole degree after being at 98.5 for weeks.  The next morning I woke up feeling like I was going to puke everywhere. Exhausted. Temperature rose to 97.5 after being 97.3. The next day nauseated. Exhausted. Boobs feel super heavy and are super veiny. Feeling "wet". Temperature rose to 98.3 and now it's 98.5 again. When I'm not wearing a bra it feels like my boobs have nothing covering them and they are super veiny. I opened the spice cabinet this morning and coughed and had to plug my nose because the smell of spice was overpowering. I never had that problem before. I feel like I could lay in bed all day and not move. I've taken a few pregnancy tests and they have been negative except on the day I believe I implanted, and it was a very faint positive. Since then I've tested negative. I don't know when I should test again but I think I'll test tomorrow.