Need advice! Tmi

I am 21dpo and I am very nasuea and my boobs are swollen and I just have that pregnant feeling. Well I spotted for two days 18,19 of this month but never had a PERIOD. Usually my periods are long and heavy. anyways I took a test and it wa a negitive. My CM is a lot and thick not like my usually CM. and I was thinking before my period usually my CM is chunky and like glue.... Can anyone give me some positive insight? I Am going to the doctor next week but would like to know what your CM looks like in early pregnancy. My cervix is also high soft and closed??