Pregnancy?

Okay so I'm 11dpo. I have a lot of weird symptoms.. so first off at night time I get really warm and you can just see how rosy my checks are, i don't have a thermometer so idk my temp. I'm constipated(haven't gone in 3 days) but extremely gassy. I have cramps but not gas cramps more like period cramps, lose of appetite which is unusual for me even if I'm sick I constantly eat (I've lose 4 pounds this week), nausea, cramps for about a week now in lower abdomen, back pain earlier this week, and light headed. My discharge is clear and stretchy. My period isn't due for another week and I just really need help right now. Has this happened to anyone and got a BFP?