CD 54

Waiting patiently or impatiently I don't know which at the moment lol. Had a faint line yesterday morning and the morning before but changed brand of hpt and got BFN this morning. I'm at 10dpo. I ovulated extremely late this month. Iv got a terrible cold, my breasts are so very sore I can't even sleep due to the throbbing pain at the bottom of them. Even in the shower they ache. Got lower back pain. Generally feel fatigued. Anyone had a faint positive, then a negative then a strong BFP? I'm really very confused I thought this was it. Iv had two previous pregnancies one ended as a still birth and one rainbow baby with both I had a terrible cold when I found out like I have now. Immune system at a low during pregnancy for me usually and I never get ill normally. Don't know what to do I'v already waited until CD 54 and have done ALOTTA HPTs ? anyone been there done that? Please help.