Today was the worst birthday imaginable

I took a pregnancy test a few days ago and found out is was pregnant. I was ecstatic and waiting for the perfect time and way to tell my husband. I went and bought my little girl a shirt that says "big sister" to surprise my husband today on my birthday. I had an ultrasound scheduled (not pregnancy related but for other issues) and the doctor called me an hour later to tell me to get back to the hospital for some blood work. I have an ectopic pregnancy (the baby settled in my fallopian tube instead of uterus) and tomorrow have to take methotrexate to rid of my pregnancy. 😢😢😢 Why?! Why can't we just get pregnant? Why is TTC so hard and stressful when it should be such a happy time? Ugh happy birthday to me I guess. I just want another baby 😕