Scared and depressed

Jessica • My fiance erica and i are trying for a baby through a sperm donor, it will be my first pregnancy!
2 months no period.,negative pregnancy tests, doctors not being super helpful ATM. Cramping, tired all the time, bloated, sore heavy breasts. Being told I could have pcos. Tuesday I have an ultrasound. Had blood work a few days ago but haven't talked the results over or anything. I'm still cramping. Feel like I'm about to have my cycle. But nothing I'm so worried.