Really need some help!!!!

Im 4-5 dpo and I have felt every symptom of pregnancy but keep getting negatives with what I’m guessing is evap lines hours later. Also Earlier in the week I had a clumpy really white thick cm and now today I have a lotiony white/clear cm. And I I got very lightheaded and felt like I was going to fall over earlier could this be a sign of pregnancy?? Me and my fiancé are hoping we are pregnant and I’m just so scared of getting my hopes up.