Hello! Sorry, on February 17-18, I had brownish-red discharge, not too…

Hello! Sorry, on February 17-18, I had brownish-red discharge, not too heavy, but not light either. On Thursday, my husband's father died of cancer, and on Sunday we had to put down our dog, who also had cancer. I don't know, I had a feeling that I needed to take a test, so I did one the day before yesterday and yesterday. Also, my heart has been beating very hard and my pulse is high, my chest hurts. I'm just afraid that a cyst might have appeared due to stress.